I'm looking to pick up a computer for my research for grad school (programming and computer vision), which I would also like to use as a personal home computer (ie. for games, music, internet, maybe some video editing here and there). I've been looking at some machines and I'm currently eyeing the 27" i5/i7 iMac models either refurb or new, as well as some older Mac Pro models on Kijiji (I'm liking the Mac Pros due to their expandability, from what I've read - the iMac I don't particularly like due to the glossy screen since I work near a window). Would it make much sense speed/performance wise to pick up the Mac Pro with cheaper lcd(s) over the iMac? The Mac Pro I believe is a 2008 model for 1400 with 4 gb 667mhz ram, 2 500gb hds,2x 2.66ghz xeons, and a geforce 7300gt (which I'm hoping to replace with a 8800gts I have laying around).