I think it depends how you're going to use it. Mine just get's used around the home and I don't have any accessories. The battery life is great, I just charge it at the wall when it needs it and don't have any use for a dock. I get on okay with the on screen keyboard and if I had any serious typing to do I'd use my laptop, so I wouldn't get a keyboard. I've never been bothered about a case/screen protector, I'm just careful about where I put it / what I put on it.
If you like games, check out mine Pop The Pigeon:
http://itunes.apple.com/gb/app/pop-t...390447989?mt=8