Hey everybody, I'm a computer-science student in need of a new computer. I decided to buy an iMac, but I have no idea which. The options are the 1,200$ model, 1,500$ model and the 1,700$ model. 1) Will the 27" model cause eye-strain after a short while? I work for long periods in time. 2) How helpful is a 27" screen vs. 21.5" screen? I do tend to work with more than one window at a time. I currently work with a 19" screen, but I have a PC with Windows. This means programs are usually open in full-screen mode. If they aren't full-screen, I still see only one window at a time properly. 3) I want to play every now and then on my computer. I want to play games like Street Figher 4, Anno 1404 and Burnout Paradise. Will the basic 27" model (Radeon 4670) work alright with these games? Will the games look blurry and bad if I have to lower the resolution? I mean, the GPU probably can't handle native resolution gaming, right? I know it will probably look better on 21.5". 4) Is the 1,500$ 21.5" model considered to be bad value for the money? Which model is best value for money? Which model will keep the highest value over time? I appreciate your help, John.