I was originally uninterested in the old nanos, but the new 2G design sold me. The battery life is very good, screen is nice, and the body is far more durable compared with my friends 1G.
There are a few problems I've been having, though, that you should probably be aware of. First, if I sync my Nano with iTunes, unplug it correctly, and go to listen to a podcast, it crashes. Almost every time. A quick soft reset fixes it but its still annoying. I have the latest versions of the iPod firmware and iTunes. There was also one time the hold switch wasn't responding, but that fixed itself and hasn't happened since.
Great music player that syncs very seamlessly with the Mac. Thumbs up.
PS: Anyone else have any similar problems?