Need some people's opinion on this. Buying an air. I use it for what any other university student uses it for. Videos, Facebook, adult content, and of course macrumors. Both are the same price. 2012 i5 basic specs 13" OR Refurb mid 2011 13" 8gb ram i7 and 256gb ssd? USB 3.0 holds no significance to me whatsoever EDIT** I also have 50 gigs of music What do you guys think? Thanks!