I'm just wondering if there is any reason to not buy a 1200 over a 900 other than the cost. With my case being one of the last two parts I'm ordering for a new build, a family member has decided to buy me one. Sometime in the near future I'd like to add a couple more hard drives to my [future] RAID setup, and also I figure the 1200 will also be less of a hassle when I break down and buy one of those new-fangled foot-long graphics cards.