i've been a long time windows user, but i've since been won over to the Apple camp. i'm tired of messing with and tweaking my pc for performance and stability, and i just want it to work. i've saved up my money and i'm ready to buy my first mac. i dont have any crazy needs that a baseline iMac (yes i want an iMac) can't handle. the only thing i'm worried about is the small amount of pc gaming i do. i really don't do much as i game mostly on my xbox, but i play a fair amount of World of Warcraft, and i will be playing Diablo 3 when it comes out. i'm not a huge graphics guy, nor do i have to have the latest and greatest at the highest res. i really just want to be able to play WoW and D3 at DECENT settings. so i'm looking at these two iMacs: http://www.amazon.com/Apple-MC309LL...XGIK/ref=sr_1_6?ie=UTF8&qid=1321233174&sr=1-6 http://www.amazon.com/Apple-MC812LL...2KBS/ref=sr_1_5?ie=UTF8&qid=1321229512&sr=8-5 there are only a few differences in these two. 1. price - $300 diff 2. cpu - 2.5 on the low, 2.7 on the more expensive model 3. hdd - 500gb drive vs 1tb drive. this isn't a huge deal for me as i have a NAS with 4tb of space. 4. graphics card - 6750 vs 6770...is it worth the difference? so i guess i'm just wondering if the bump is worth the extra $300? thanks in advance.