Looking to buy my new mac sat. Currently I use a white macbook with 4gb ram, and 500 gb hdd. the 13 inch Air seems like it would be perfect except storage space. I have a ton of HD video from iTunes. Do those with the 13 Air just store there video to external drive as they download it? IS it annoying or am I better off getting the 500gb Pro? Does anyone have screen comparison Ive been reading on here that the screen on the Air is the best out there?