I don't agree on "only" - another way of putting that is that the Air weighs less than half what the Pro does. The Pro isn't that heavy in absolute terms, but t

I don't agree on "only" - another way of putting that is that the Air weighs less than half what the Pro does. The Pro isn't that heavy in absolute terms, but the Air is still going to be nicer to carry about the place - I'd seriously think about that if it was going to be a secondary computer.