I haven't seen anyone recommend a larger than 22 in. monitor.
I just got this Dell and I love it. I went from a Samsung 931BF.
I play Oblivion at 1920 x 1200 with settings on max but no AA and it is great. Don't know my FPS but unless I'm taking on more than 5 guys at one time I don't get any stutters.
BTW, I get 7985 on 3dMark 06.
CPU at 2940 and GPU at 575/1502.
If you've got the bux, you should go to a computer store and look at 24 in. compared to 22 in.