I hate my MacBook!! It is a 2009 white MacBook. It runs like it is a Windows machine, lots of lag, spinning beach balls of death, crappy crappy crappy!!! I've been to Apple a few times and the diagnostics never reveal anything wrong. So, that being said, I am dying to replace it. I am looking at the rumored machines to be released this Spring, the MBA-12, and the 12.2 inch iPadAirPlus. Can anyone shed any light on what (hypothetically - since there are no official details available) might be the difference, pros/cons of each? I am going to buy one of them, I just can't decide which to prefer.