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Coated articles are provided with an anti-reflection system(s) which enables high visible transmission and/or low visible reflection. Neutral color is also attainable in certain example embodiments. In certain example embodiments, the anti-reflection system(s) is used in conjunction with a double si

Coated articles are provided with an anti-reflection system(s) which enables high visible transmission and/or low visible reflection. Neutral color is also attainable in certain example embodiments. In certain example embodiments, the anti-reflection system(s) is used in conjunction with a double silver (Ag) layer stack which provides low sheet resistance and/or emissivity.

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1. A coated article including a coating supported by a glass substrate, the coating comprising:first and second infrared (IR) reflecting layers comprising silver (Ag); a first dielectric layer having an index of refraction n<=3.0 provided between the first IR reflecting layer and the glass substr

1. A coated article including a coating supported by a glass substrate, the coating comprising:first and second infrared (IR) reflecting layers comprising silver (Ag); a first dielectric layer having an index of refraction n<=3.0 provided between the first IR reflecting layer and the glass substrate; a second dielectric layer having an index of refraction 1.8<=n<2.2 provided between the first and second IR reflecting layers, wherein the second dielectric layer has an index of refraction n less than the index of refraction n of the first dielectric layer; a third dielectric layer comprising silicon oxynitride provided over the first and second IR reflecting layers, said third dielectric layer comprising silicon oxynitride having an index of refraction n less than the index of refraction n of the second dielectric layer; wherein the coated article has a visible transmission of at least 70%; and wherein each of the first and second IR reflecting layers comprising Ag is sandwiched between and contacts a pair of contact layers, and wherein at least one of the contact layers adjacent each IR reflecting layer comprises at least one of NiCr, NiCrOx, and NiCrNx, at least one of the contact layers comprises Ni and Cr. 2. The coated article of claim 1, wherein the third dielectric layer comprising silicon oxynitride has an index of refraction 1.45<=n<=2.0.3. The coated article of claim 2, wherein the third dielectric layer comprising silicon oxynitride has an index of refraction 1.6<=n<=1.9.4. The coated article of claim 1, wherein the first dielectric layer comprises titanium oxide.5. A coated article including a coating supported by a glass substrate, the coating comprising:first and second infrared (IR) reflecting layers comprising silver (Ag); a first dielectric layer comprising an oxide of titanium and having an index of refraction n<=3.0 provided between the first IR reflecting layer and the glass substrate; a second dielectric layer having an index of refraction 1.8<=n<=2.2 provided between the first and second IR reflecting layers, wherein the second dielectric layer has an index of refraction n less than the index of refraction n of the first dielectric layer; a third dielectric layer comprising silicon oxynitride provided over the first and second IR reflecting layers, said third dielectric layer comprising silicon oxynitride having an index of refraction n less than the index of refraction n of the second dielectric layer; wherein the coated article has a visible transmission of at least 70%; and a layer comprising silicon nitride located between the first IR reflecting layer and the first dielectric layer comprising the oxide of titanium. 6. The coated article of claim 1, wherein the second dielectric layer comprises tin oxide.7. A coated article including a coating supported by a glass substrate, the coating comprising:first and second infrared (IR) reflecting layers comprising silver (Ag); a first dielectric layer having an index of refraction n<=3.0 provided between the first IR reflecting layer and the glass substrate; a second dielectric layer comprising tin oxide and having an index of refraction 1.8<=n<=2.2 provided between the first and second IR reflecting layers, wherein the second dielectric layer has an index of refraction n less than the index of refraction n of the first dielectric layer; a third dielectric layer comprising silicon oxynitride provided over the first and second IR reflecting layers, said third dielectric layer comprising silicon oxynitride having an index of refraction n less than the index of refraction n of the second dielectric layer; wherein the coated article has a visible transmission of at least 70%; and another dielectric layer comprising silicon nitride provided between the first IR reflecting layer and the second dielectric layer comprising tin oxide. 8. The coated article of claim 1, further comprising another dielectric layer comprising tin oxide provided between the third dielectric layer comprising silicon oxynitride and the second IR reflecting layer.9. A coated article including a coating supported by a glass substrate, the coating comprising:first and second infrared (IR) reflecting layers comprising silver (Ag); a first dielectric layer having an index of refraction n<=3.0 provided between the first IR reflecting layer and the glass substrate; a second dielectric layer having an index of refraction 1.8<=n<=2.2 provided between the first and second IR reflecting layers, wherein the second dielectric layer has an index of refraction n less than the index of refraction n of the first dielectric layer; a third dielectric layer comprising silicon oxynitride provided over the first and second IR reflecting layers, said third dielectric layer comprising silicon oxynitride having an index of refraction n less than the index of refraction n of the second dielectric layer; wherein the coated article has a visible transmission of at least 70%; and another dielectric layer comprising silicon nitride provided between the third dielectric layer comprising silicon oxynitride and the second IR reflecting layer. 10. The coated article of claim 1, wherein the coated article is characterized by a visible transmission of at least 75%, a sheet resistance (Rs) of no greater than 10 ohms/square, and a glass side visible reflectance <=9%.11. The coated article of claim 1, wherein the coated article has a visible transmission of at least 76.5%.12. The coated article of claim 1, wherein the third dielectric layer comprising silicon oxynitride is at least one of oxidation graded and nitrogen graded, so that an index of refraction n of the third dielectric layer comprising silicon oxynitride changes from a first value in a first portion of the third dielectric layer to a smaller second value in a second portion of the third dielectric layer, wherein the second portion of the third dielectric layer comprising silicon oxynitride with the smaller index of refraction n is further from the IR reflecting layers than is the first portion of the third dielectric layer.13. An IG window unit comprising the coated article of claim 1.14. A coated article including a coating supported by a glass substrate, the coating comprising, from the glass substrate outwardly:a first dielectric layer comprising titanium oxide; a first contact layer comprising at least one of NiCr, NiCrOx and NiCrNx; a first IR reflecting layer comprising Ag; a second contact layer comprising at least one of NiCr, NiCrOx and NiCrNx; a second dielectric layer comprising tin oxide; a third contact layer comprising at least one of NiCr, NiCrOx and NiCrNx; a second IR reflecting layer comprising Ag; a fourth contact layer comprising at least one of NiCr, NiCrOx and NiCrNx; a third dielectric layer comprising silicon oxynitride,the third dielectric layer having an index of refraction less than of the second dielectric layer; and wherein the coated article has a sheet resistance (Rs) of no greater than 10 ohms/square. 15. The coated article of claim 14, wherein the coated article has a visible transmission of at least 70%.16. The coated article of claim 15, wherein the coated article has a visible transmission of at least 75%.17. The coated article of claim 14, further comprising another dielectric layer comprising silicon nitride provided between and contacting the first dielectric layer comprising titanium oxide and the first contact layer.18. The coated article of claim 14, further comprising another dielectric layer comprising silicon nitride provided between the second dielectric layer comprising tin oxide and the third contact layer.19. The coated article of claim 14, further comprising another dielectric layer comprising tin oxide provided between and contacting the third dielectric layer comprising silicon oxynitride and the fourth contact layer.20. The coated article of claim 14, further comprising another dielectric layer comprising silicon nitride provided between the third dielectric layer comprising silicon oxynitride and the fourth contact layer.21. The coated article of claim 14, wherein the third dielectric layer comprising silicon oxynitride is at least one of oxidation graded and nitrogen graded, so that an index of refraction n of the third dielectric layer comprising silicon oxynitride changes from a first value in a first portion of the third dielectric layer to a smaller second value in a second portion of the third dielectric layer, wherein the second portion of the third dielectric layer comprising silicon oxynitride with the smaller index of refraction n is further from the IR reflecting layers than is the first portion of the third dielectric layer.22. A window comprising the coated article of claim 14.23. A coated article including a coating supported by a glass substrate, the coating comprising:first and second infrared (IR) reflecting layers comprising at least one of Ag and Au; a first dielectric layer having an index of refraction n<=3.0 provided between the first IR reflecting layer and the glass substrate; a second dielectric layer having an index of refraction n less than that of the first dielectric layer provided between the first and second IR reflecting layers; a third dielectric layer comprising silicon oxide provided over the first and second IR reflecting layers, said third dielectric layer comprising silicon oxide having an index of refraction n less than that of the second dielectric layer. a dielectric layer comprising tin oxide provided between the second IR reflecting layer and the third dielectric layer comprising silicon oxide. 24. The coated article of claim 23, wherein said first and second IR reflecting layers each are metallic and comprise Ag.25. The coated article of claim 23, wherein each of the first and second IR reflecting layers is sandwiched between and contacts a pair of contact layers, and wherein at least one of the contact layers comprises at least one of NiCr, NiCrOx, and NiCrNx.26. The coated article of claim 23, wherein at least one of the contact layers comprises Ni and Cr.27. The coated article of claim 23, wherein the first dielectric layer comprises titanium oxide.28. The coated article of claim 23, wherein the second dielectric layer comprises at least one of tin oxide and silicon nitride.29. The coated article of claim 23, wherein the coated article is characterized by a visible transmission of at least 70%, a sheet resistance (Rs) of no greater than 10 ohms/square, and a glass side visible reflectance <=9%.30. The coated article of claim 23, wherein the coated article has a visible transmission of at least 76.5%.31. A window comprising the coated article of claim 23.32. A coated article including a coating supported by a glass substrate, the coating comprising, from the glass substrate outwardly:a first dielectric layer comprising at least one of silicon nitride and titanium oxide; a first contact layer; a first IR reflecting layer comprising Ag; a second contact layer comprising at least one of NiCr, NiCrOx and NiCrNx; a second dielectric layer comprising at least one of tin oxide and silicon nitride; a third contact layer; a second IR reflecting layer comprising Ag; a fourth contact layer comprising at least one of NiCr, NiCrOx and NiCrNx; a third dielectric layer comprising at least one of silicon oxide and silicon oxynitride provided over all four contact layers and over the first and second IR reflecting layers; the third dielectric layer having an index of refraction (n) less than that of the second dielectric layer; and wherein the coated article has a visible transmission of at least 70% and a sheet resistance (Rs) of no greater than 10 ohms/square. 33. The coated article of claim 32, wherein the coated article has a visible transmission of at least 75%.34. The coated article of claim 32, wherein the coated article has a visible transmission of at least 76.5%.35. The coated article of claim 32, wherein the first dielectric layer comprises titanium oxide, and the coated article further comprises another dielectric layer comprising silicon nitride provided between the first dielectric layer comprising titanium oxide and the first contact layer.36. The coated article of claim 32, wherein the second dielectric layer comprises tin oxide, and the coated article further comprises another dielectric layer comprising silicon nitride provided between the second dielectric layer comprising tin oxide and the third contact layer.37. The coated article of claim 32, wherein the third dielectric layer comprises silicon oxide, and the coated article further comprises a layer comprising tin oxide located between the fourth contact layer and the third dielectric layer comprising silicon oxide.38. The coated article of claim 32, wherein the third dielectric layer comprises silicon oxide, and the coated article further comprises a layer comprising silicon nitride located between the fourth contact layer and the third dielectric layer comprising silicon oxide.