I think if any particular factor (weight, power, battery life) is not of primary importance to you, then it's easy to say "a MB is not that much heavier than a MBA anyway," or something like that.
But if you truly value portability, then yeah going from 3 to 5 pounds is significant. I think your point about the Air are very good. Compromises have to be made in any ultraportable, but I think the choices Apple made were good ones on the whole.
But if you truly value portability, then yeah going from 3 to 5 pounds is significant. I think your point about the Air are very good. Compromises have to be made in any ultraportable, but I think the choices Apple made were good ones on the whole.