I am wondering how many people here are selling their 13" mbp for the new mba? I am considering switching, but the only thing that is killing me is the hard drive space. I have a lot of apps, and iphoto, but my itunes are on a NAS. For some reason I seem to fill my 500GB mbp pretty quickly. I am going to try and slim down my mbp and see if it is feasible for me. Anyone here switching? If so, do you have any concerns? Or what are the main reasons you are switching to the MBA?