My wife has a modbook, and it is made of unmitigated awesome. It's a little heavy, and the display is a bit dim because of the glass screen cover... But it's awesome. And the price is very reasonable. The stylus works really well (and comes with several different types of tips, including a felt tip that feels just right...)

She bought it to do UX design work with it, and started on a webcomic with it because she just liked playing with it so much. ArtRage is awesome on it.