I've had my new Acer Aspire One 3G for a couple of weeks now. And so far - pretty good. It works very well for my basic needs. And the portability is awesome. The battery life is 6 to 7 hours and so I just pick it up, without its power cable and go.
Occasionally I am irritated because I would like to see more on the screen, but so far it is generally ok.
The next step is to try powerpoint and the multimedia stuff.