Apple MacBook Air
It makes sense to start off with the MacBook Air, as it has certainly garnered the most adoration from the media. But this arguably revolutionary device was kept out of a lot of hands, as it started out at $1,799 when it was first released in 2008. Fast-forward three years and you've got two models in the line, with the smaller 11" one starting at just $999. Both are powered by Intel's latest Core i5 processors. (Apple)