Have an 2010 Air, the display broke today [insert Apple conspiracy theory ], so figured I'm gonna take the upgrade plunge. I love the extra screen space they 13" Air gives me, using my wife's 13 " MBP with the lower resolution always felt like a productivity hit. I know the 15" supports a retina version of 1440x900 natively, but switching to that from an Air just feels like a big loss in terms of portability. So, my question is this. Is it worth getting the 13" rMBP if I run the resolution at the equivalent of 1440x900 instead of the retina 1280x800. It kinda feels I won't be getting the most out of it. So, why not just get another Air. Will creating more space make the screen look noticeably worse? Has anyone had similar experiences with the 15 rMBP and using the resolutions to create more space? I'm guessing a retina Air is still a few years away. I'm just worried I'll get the 13" rMBP, set the resolution to have more space (like the air) and not see a step change in quality.