I love my iPad. Unless you are big on creating documents, presentations, or programming, the iPad should be everything you need. It's also gorgeous. It's not great as a standalone computer becuase of limitations like printing. But otherwise, it's a great machine. The Kindle app and the Nook app are really great too. I used it for school and conferences since I got it. It's great cuz it's nice and light and got great functionality.
The one issue I saw is, if you're likely to do a lot of typing, I would worry about the effect on your fingers of typing on a hard glass surface. But yeah, that's a rare person who's going to type enough to worry about that, especially on the iPad.