I was rather surprised by Apple's tagline for the new MacBook Air, 'The New Generation of MacBooks' (Apple - Mac).
As a means of selling MacBooks, fine. But what does it say about their other models?
I have the first generation MBA. It is a great design apart from the design fault on the hinges. But my original plan was to get the 17" model which is great unless you don't mind carting a large, heavy slab of aluminium round with you.
No doubt some of the people who go for the 15 and 17" models really do need the extra performance of a 2.5 GHz processor over 1.8. But some would surely find a smaller machine more than made up for a modest reduction in speed.