Hi, I'm hovering over buying a new iMac and would like some advice please. Originally, I had the high end 21.5 in my sights, but I'm now contemplating the lower end 27'' or maybe even the quad core. Here's what I use it for - Internet Minor photo editing Music (Garageband/Guitar Rig) Video editing in FCP, nothing major just short films/music videos in HD. A handful of games in Win7 (Left4Dead, Mass Effect..) I'm slightly concerned about the Core 2 Duo being such an old chip design, that quickly will become outdated which is why I was leaning towards the i5. Any ideas?