I am deciding between sizes and I will be using stuff like Xcode (with iOS simulators), Adobe CS5 applications, Eclipse, and lots and lots of web browsing (multiple windows, tabs), iTunes, a bit of word processing, PDF viewing, streaming video and streaming music. Can an 11-inch Macbook Air be used as a primary and *only* machine? No external monitor connected to it either. I've done search on here to see if anyone has this experience or can give advice as to whether I'd be selling myself short using an 11" instead of 13" but can't quite nail it down. My concern is the screen size of course but also the way your hands would rest while typing (without the edge digging into your wrists/palm), and the smaller trackpad on the 11" Does anyone have this experience or offer suggestions? I don't have an external monitor and don't plan on getting one - I prefer to use the notebook on my lap pretty much at all times. Thanks!