[wisty]

I'd get the MBA over either the MBP or x220. Thinness, SSD in all models, a UNIXish OS which actually runs some non-free software (and doesn't have people ask you what the hell is wrong with your computer), a crisp screen (the MBA has the same resolution as the 15" MBP) ... sorry, us MBA people are the most annoying Apple fanboys, right?

The only laptops I've seen which I've been at all envious of are later-model MBAs, and Toshiba's Satellite Z830 (damn that thing's light).

But if you don't mind a heavy laptop, the x220 does look nice. 15 hours video (with the $180 battery hump thing) definitely raises the bar.

[hackoder]

I have this year's MBA. Its pretty good, except for the 4 gigs of ram. I find the the T/X series more ergonomic for longer periods of typing though (matte screen + plastic wrist rest is more comfortable).

The T/X run well with linux, so you get all free software ;-) Also, the x220 is 3.3 lbs [1][2] vs 2.96 lb [3] for the air.

[1] http://www.lenovo.com/psref/pdf/tabook.pdf

[2] The 4-cell actually puts it at 2.97 lb, but the capacity is only 28 Wh compared to the Air at 50 Wh. The 6-cell on the other hand is 62 Wh.

[3] http://www.apple.com/macbookair/specs.html

[bitwize]

I stopped giving a shit what other people think of my computer when a pretty girl told me my NetBSD laptop was "not digital enough" and I needed to buy a Mac because it was "more digital".