Mossberg got his hands on the new MacBook Air this week and seems to have liked them (see the enthusiasm?!):
So, if you’re a light-duty user, you might be able to adopt one of the new Airs as your main laptop. If you’re a heavy-duty user, who needs lots of power and file storage, they’re likely to be secondary machines.
Overall, Apple has done a nice job in making these new MacBook Airs feel more like iPads and iPhones without sacrificing their ability to work like regular computers. But, as always with Apple, you’ll pay more than you will with Windows PCs.