I own one of these with the SSD disk.

Pros:

Reasonable battery life. I've been able to watch just over three hours of MPEG2 (standard-def downloaded from my TiVo) with the screen dimmed before the battery crapped out.

Staggering screen brightness. Brighter than my Apple Cinema HD 23" display. With the brightness cranked even most of the way up, the screen overpowers reflections from the glossy aspect. I hate, hate, hate these damn glossy screens, but on the MBA it's not so bad.


Cons:

Compared to my Thinkpad, the keyboard sucks. There's no nice way to put it. I want back the key feel of my Thinkpad.

The single USB plug is occasionally annoying, but less than you'd think.

I keep forgetting to bring along the damn Micro-DVI dongles. I've showed up in class to teach a lecture and had to race back to my office to get the damn stupid VGA adapter. This is an issue with any Apple laptop, versus other laptops that have a VGA connector built in. I assume I'll get used to this.

My specific MBA has a power-drain problem when it's on standby (discussed in another thread here). Just yesterday I shipped it back to Apple so they can "fix" it. In theory, I'll have it back in a few days and I'll let you know how the repair went. Observation: the telephone support people are actually pretty good. This contrasts with the support moron I once got when I called Motorola for help with their synchronization software for the RAZR. What was I thinking?

The screen resolution is great for me, but then my old machine was 1024x768. The MBA just barely, barely fits in a coach-class seat with the tray table down and the seat in front of you reclined all the way. If it were any bigger, it wouldn't work.

Surprising annoyance: in Apple's desire to round off the corners to make the MBA look maximally svelt, you end up with an edge comparable to the edge of a wooden clipboard. Load a clipboard with enough paper to reach three pounds and carry it in one hand and you'll find it starts cutting off the circulation in your fingers. My old Thinkpad, with its clunky square edges, did better at this. My even older HP Omnibook 510 was the best, because they rubberized and rounded off the edge, but it had plenty of room to spread the weight.