Im currently using a Dell 2709w whats your experiences comparing this one to the u 3011
Well you're going from a 1920x1200 to 2560x1600 and from *VA to IPS. All pluses in my book.
The u3011 is will be better for multitasking. The dot-pitch is much higher, so text will be smaller, but you can always increase text size in applications that support it.
I current use 30"rs and text is very crisp for me. Also with the higher resolution, you'll only need to use 2xAA in games when you actually need it. In a lot of game I leave it off.