I've always thought if the Kindle Paperwhite was just slightly nicer spec-wise, it might be my perfect tablet. Batteries that last a long time, books everywhere, a better browser would be great, a way to take notes maybe, slightly more responsive screen. I don't need much more.
Kindle Fire! The $50 one is just good enough that I can use / take notes on it, but not so good that I end up browsing the web.