I have the 4GB 11" Air, and it's quickly becoming my favorite dev machine, even when I'm next to a monster dual quad core Xeon box. The Intel card is fairly slow at pushing pixels around (so if you develop graphics you'll notice slow texture access, etc.), but is mostly capable.
The simple deciding factor is a SSD in the laptop. It's hard to overstate how much of a performance difference these make in compiling, localhost-served webpages, etc.
The simple deciding factor is a SSD in the laptop. It's hard to overstate how much of a performance difference these make in compiling, localhost-served webpages, etc.