I recently got the rMBP 13" and I am going to probably return it for the MBA 13", The rMBP is a great machine, but I have tried everything and am not a fan of the screen, don't get me wrong, its great, but my eyes cannot adjust to the resolution at any setting or brightness. I have no idea why. I didn't really see a huge issue with the MBA screen so I think I am going to get the MBA and a Surface 3 (To take handwritten notes in class). I really wish I could do that effectively on the iPad but alas it doesn't have the digitizer :-(