I'm thinking about getting an electronic book reader. Does anyone have one? If so, what brand, and what do you think of it? Is there sufficient selection available for it, and is it reasonably priced? Is there selection beyond bestsellers? Are you bound to one vendor for your downloads?

I'm thinking this would be a great way to bring a lot of books on the Discovery Cruise later this year, without having to weigh down a suitcase with them. I realize that there's a decent selection of books in the ship's library but I want to be able to have my own selection available.