I made the decision to buy my wife a MBA and have been reading threads for the past month. It would be replacing her 6 year-old MacBook (of the white plastic variety). A couple questions linger ... - I've got a mid 2010 MBP with 15-inch (1680 x 1050) display. I'm looking for frame of reference, how does the MBA compare? All of the retina talk has confused me more than anything to the point that I wonder if it's blurry. - Am I justified in worrying that I buy the MBA now, only to see an significant upgrade soon thereafter? Thanks for your help!