This is a very interesting review from the Verge. Here’s three very important quotes:

What every other PC maker has failed at, Apple nails: the touchpad on the Air works better with Windows 7 than any other Windows laptop on the market.

[…]

Apple’s decision to use premium parts shows in the display. The 13-inch 1440 x 900 resolution panel bests most of the others in terms of resolution and pixel density. […] [It’s] also a very high quality display. That means that you can see what’s on the screen from most angles, and there isn’t any noticeable color change when you move the display back, like on the Folio 13.

[…]

And there’s more on this below, but the lack of bloatware really speeds up the general responsiveness of the operating system.¹

To me as a Mac user it proves that Apples focus on premium parts at a premium price really pays off for the user experience. (Ultimately the reviewer concludes that the Air plus Windows 7 is a bit to expansive.)