My netbook is an Asus (1000HE) and I've been incredibly impressed with it. Upgraded memory and the hard drive, very accessible. Like I said, it runs Vista just fine. The next portable I buy will be an Asus, and one of their integrated pc/monitors for the kids before long.
When buying a laptop, everyone should get a laptop desk like this:

Keeps a flat, hard surface underneath for airflow. Setting the laptop/netbook down on the bed or a pillow is just going to kill it. I got one just like that but without the wrist pads at Borders. Also gives you room for a mousepad (more so with a netbook, but my wife uses one too with her laptop).