I have a '10 MBA 13. It's really an almost ideal laptop.

Pros:

-It runs a Unix based OS, but one that I don't have to install and configure myself.

-It's thin and light

-Battery lasts 7 hours (although recently I've been getting ~5:30, which is not quite enough for "all day usage")

-The display is high res. Has the same res as many 15" displays.

Cons:

Limited storage and RAM with huge markups for upgrades.

edit: love is probably too strong a word for any machine, esp. one you didn't design & build yourself.