I know I definitely want a 27" iMac but Im on a tight budget and dont know which to buy. I am a moderate gamer and want to play WoW, Witcher 2, Battlefield 3 and Guild Wars 2 when they come out. The problem is that it would be all I can do to afford the 2011 high end. Assuming I didn't go that route, would I be better off from a gaming standpoint to get the 2010 with the 1GB 5750 or the low end 27" 2011 with the 512MB 6770. Which would I see best results with most likely? What would you guys do?