I'm not to sure which one I should get. I need a 13 to carry around with me, when I travel and when I'm not at the house. How big of a difference is there between the MBA and the MBP portability wise? Is a 1.5 pounds really a big difference between the 2? The only thing I would use it for is school work when I'm not at the house, I have an 27 i5 for everything else. Another thing is I could get a refurb MBP from the refurb store for about the same price I could get a used MBA off someone and I know that te MBP has a faster CPU.