I've had the Ultrasharp Dell 2711 for a few years now. It's been an amazing thing for me. I've appreciated it a lot more than my 60'' LG Plasma which was the flagship models a few years ago.
There is this pre-calibrated color spectrum profile that covers most of the RGB spectrum. It's very accurate. It's the same panel that they use in Imacs and Thunderbolt display.
I've heard people talk about input lag, but I have never had a problem. I guess it could be a problem if you are a competitive e-sport gamer who needs 120-200 fps in counter-strike, but besides that it's really top notch.