You also get a much better 1440x900 resolution with the MacBook Air, plus the very thin design and barely any weight to the unit at all. The MacBook Pro will give you up to an i7 processor, Thunderbolt (Light Peak), Ethernet, and FireWire, things you don't get on the MacBook Air. The MacBook Pro is also upgradable to 8GB of RAM, while the MBA can only handle 4GB of RAM, but the MacBook Pro weighs considerable more. Again, you still only get the MacBook resolution of 1280x800 with the MacBook Pro, which would be a deal-breaker for me.