I'm looking into buying a new/refurb/used MBA... I'm having a hard time figuring out which one to get because I'm not really sure what's the most important. My top choice right now, except it's sort of expensive, is the 2012 base 13" with RAM upgrade to 8gb. My second choice is the capped 13" in the refurb store, which would be pretty much the same price, but double the SSD space and an i7 instead of an i5, although only 4gb ram. If I can buy used, it will likely be a decent amount cheaper still than the refurb store. The extra space isn't that important to me, as I have an external HD I don't mind using for big things. 128gb will be a change and maybe a little hard to get used to, but I think I can, although 256 would obviously be nicer. My biggest worry is the i5 vs i7 (are the i5s and i7s different in 2011 vs 2012 as well?) and 4gb ram vs 8gb ram. If that refurb is going to run better and have twice the space as the 2012 MBA I'm looking at, it would seem silly to get the 2012 just because it's newer. If anyone can give me some tips and pointers and help in figuring out the right MBA to buy for me, that'd be great. My only requirement is 13" and not 11", as I really think the 11" will be too small for me, since I can't really imagine using my iPad w/ keyboard case as a computer even if it has OSX on it.