I'm wondering if the cost for a MBA (~$900) is really worth it. To me I can practically get the same (and even better) desktop by just going with a $200 laptop loaded with Xubuntu, which I do have. My dilemma follows. I program dot NET apps at work and I wanted to start developing iPhone apps but in order to do so I have to by a Mac. I need help justifying the outlandish cost for a MBA/MBP. I would appreciate some feedback from linux uses.