I'm in a stumped situation. I am going to get either or, but I'm not sure which one will suit me. I've heard from someone they averaged 21 fps on the 24 inch in GTA 4 in medium settings with max resolution. I want to do some causual gaming. I want a sharp picture, I don't care about quality. I want around 24 fps. I want to play The Sims 3 with around 40+ fps on medium to high settings (gaming is all in Windows). I do heavy video editing occasionally, I make music, work with 10 MP SLR pictures, etc on my current low end 2008 20" iMac, but FCP is almost impossible to use when working with 1080P high quality video. Photoshop takes a bit to save and render some things. Motion can be a devil. I heard the 9400M is 2x better than the 2400XT. But GT120 is dedicated and also said to be better. However, the 24" is larger but no LED. It also has a worst"er" design. I also plan to stick with 4 GB RAM. Which one would be the better choice?