Just got my Viewsonic VP2770-LED.
Going from a 1440x900 19" screen to this is quite a change. My system is handling the 2560x1440 resolution better than I expected. Offline in AH I was getting 25-55fps, which given my system's makeup is much higher than expected. Not sure if it will be playable online though.
The screen is large enough that it cannot be seen entirely at once and you find you need to look around on the screen to see everything. I wouldn't want to go any larger than 27" while still having it on my desk. I am quite glad I didn't go for a 30" screen.
I don't see any ghosting on it, no dead pixels and the colors are very vibrant.
Thus far I am very happy with it.
I also don't have to turn it on and off about twenty times before it will actually display what the computer is sending it like my 19" was requiring at the end.