Is there really any advantages to the 2012 MBA 13" over the new 15" Retina MBP other than weight, and costing $400.00 cheaper? I was initially going to get a 15" Retina but now am looking at the 13" and it seems to be a pretty damn good upgrade minus the Retina Display. Maybe I'll save some dough and just pick up the 2012 MBA. I dunno. To anyone who chose to get a new 2012 MBA over the new MBP Retina, what was your reasoning? Sorry about the title typo's I don't know what the hell happened.