Within the past month I made a switch to macs and bought a 13 inch mbp and a 15 inch 2.66 ghz mbp and wondering if it is worth getting a macbook air. What would my benefits be? Money is not a factor, but I do not like to waste money on something that is a rip off or useless. I am just a college student, but I use my 15 inch and going to use my alien ware m17x as a desktop replacement.