Oh wow, I came back to a ton of comments!

I do remember hearing about Amazon pulling that book and I didn't like that one bit. Has it been done since?

Weight is a factor for me. At times I read for very long stretches and I think the nook is a little heavier than I would prefer - points to the Kindle for that.

One of the commenters below said the Kindle can be treated as a hard drive, so that's good to know.