I'm looking for one as well.
I looked at the Nook Color and the new Nook Touch. The nook color was nice but much heavier and battery life was no where near as good (for obvious reasons).
The nook Touch looks really nice, is super thin and has amazing battery life. Not to mention a better price. Also naturally is better for viewing in sunlight due to the e-ink.
At this point I'm really thinking about getting a nook touch, I need to get more reviews/first hand impressions of it though.
Edit: Just saw you want one that acts as a PC, pretty much rules out Touch.