I'll be heading off to college next year, and I need to replace my faithful macbook (which now beachballs when browsing the web). My computing needs will be: -basic web browsing/skype/email/iChat/word processing -some 3d gaming (TF2/L4D2,Portal 1&2, etc.) -a fair amount of music editing (lots of Garageband, maybe Logic down the road). I'll need some USB ports for mics and maybe a Firewire in the future. -light video editing (nothing more than rearranging clipsno "real" editing) I won't use more than iMovie. Should I get the 13inch or 15inch pro? I'm not in the market for a unibody macbook since I want a change from my current white macbook. Will the core i5 in the 15 be a significant difference from the c2d in the 13? Will the 13 handle my gaming needs? Will the size and weight differences between the 13 and 15 be significant? I don't want to carry more than I have to, but my needs outpace the Air. Also price is somewhat of a concern. I'd like to keep it as low as possible (but I still want a pro over the regular macbook). Thanks in advance.