I have a maxed out 13" MacBook Air for development and I love it. Being able to cart it around easily is great, and it's plenty fast enough. I do have an addit

I have a maxed out 13" MacBook Air for development and I love it. Being able to cart it around easily is great, and it's plenty fast enough. I do have an additional screen and I'd definitely recommend at least having access to one if you need it. I have a 24" Dell Ultrasharp which more than makes up for the lower resolution of the Air, when (eg) I want to use Photoshop.