Our photo library is over 100gb and we make a lot of home vids with iMovie. Upgrading our 2009 machine to the 2011 one. Would the quad server model be the better choice here or the 2.7 dual with radeon? I'm guessing those iMovie exports would benefit from the quad but not sure on all other aspects. Computer will be connected to HDTV via hdmi for a second display running htpc types of apps or video full screen while the computer display will be running basic Mac apps unless I am working on photo or video editing... Any help appreciated!