I'm really excited about the new imacs. I'm currently on a 2008 base model iMac and I use the computer mostly to play games and surf the web/email/youtube/netflix/etc. I'm really only playing diablo 3 (very rarely -- it's not that fun!), starcraft 2, and world of warcraft. My OCD/neurosis wants me to get the upgraded i7, the extra RAM, and the fusion drive. My bank account is protesting mightily. What upgrades should i get if that's all I do with my computer?