Did you guys switch to different color preset when doing different type of work? E.g. switching to Standard color preset when doing document stuff and Movie color preset when watching movie? I feel that the white color in Standard preset mode doesn't really looks that white compared to the white color in my MBP, however the white color in Movie preset mode seemed 'white enough' but other colors like green and red appears to be tinted.

If I were you I would have upgraded to 27' or 30'. You would've noticed a bigger difference in terms of screen estate that way. The extra 200px vertical space isn't really that noticeable if you upgrade from 23' 1080p.

Tested some games (e.g. Assassin Creed: Brotherhood, Anno 1404, RE5, DIRT3, DA2) on U3011 for about 5 days now and I'm lucky that my good old 5870 still able to play most of the pre-2012 games without much lag even in its native resolution and high settings. So far only Anno 2070 that I had tested put a high stress on the GPU and the settings need to be tuned down to medium/high for the frame rate to be consistent. Did not experience any ghosting or lagging image. The matte surface is definitely a plus.