I love my 13" macbook air; screen size seems fine for development for me, though I do have to alt-tab to toggle apps a lot. It seems plenty fast enough (doing r

I love my 13" macbook air; screen size seems fine for development for me, though I do have to alt-tab to toggle apps a lot. It seems plenty fast enough (doing rails development). I also have the 128GB hard drive. I don't use this for photos/music, so I don't have much need for more. The weight factor is more important than I would have thought.