As someone who's gone from boxy laptops to an Air... yes, there is a difference in "mobility". I take my Air out to a cafe or a park or whatever to get work don

As someone who's gone from boxy laptops to an Air... yes, there is a difference in "mobility". I take my Air out to a cafe or a park or whatever to get work done a LOT more than I took my old Powerbooks. Heavier computers are something I had to make a decision to go out with. I knew I would be lugging it around on my shoulder and feeling grumpy. But the Air? It, plus a Wacom tablet next to it, takes up less room than the hardback sketchbooks I used to haul around as a matter of course. And I can sit out under a tree on a nice day and do finished, full-color art with a lot less mass than hauling a paint box around. (The fact that a full charge lasts most of a day helps a lot, too. I only take the power brick when I'm going out of town.) Now, I will admit that I do also care about how stuff looks. I'm an artist; it's my job. But my experience is that there is something really, really different about having a laptop that does everything you need, and weighs less than a hardbound book.