Smaller, lower resolution screen - you'll hate it. Nokia will resolve the reboot issues - they (obviously) rushed the initial N800 firmware and they're (according to Ari Jaaksi) "focusing on quality" now, I'd give them one more chance with the next firmware update. Take a refund, and think on it for another month before plumping for the Zaurus (which as Karel points out, is end-of-line'd).