I know there have been lots of posts recently about PC games running on macs. I am currently considering upgrading my ibook to an iMac. On Paper the differences once upgraded between the 17" & 20" iMacs don't seem to be be too much, other than the screen size. I personally think the 17" screen looks better as the larger 20" model looks like a toy for people with bad eyesight, something you would see in a special needs hospital, shoot me down, I'm just kidding, but it does look a bit mongy compared to the more subtle 17" (personal opinon) What I am really getting to is asking if I would notice thaty much of a difference if I got the 17" and wacked in 2gig ram & upped the HDD. Would the extra .17 ghz make any difference aswell as the 256Mb graphics compared to the 128 on the 17"? I can't wait to get playing Battlefield 2, and if this runs as well as it does on a PC on the 'beefed up' 17" Imac then I will be happy as Larry. Any opinions?, I mean I could afford the 20", but I just think it is a bit too big and spoils the nice subtle design of the imacs.