Hello! I have finally decided to leave Windows and switch to Mac OS. I'm going to buy advanced 21,5" iMac (1 TB and ATI 4670). In a future, I will like to buy a PS3 to play, but now I want play games like Team Fortess 2, Dragon Age, Mass Effect 2...with my iMac. Do you think that the iMac is a good deal now and for some years? I am going to use it for lots of things, from games like I said to photography.