I have a friend who got a Kindle Fire for Christmas and pretty much thinks the sun rises and sets by it, so it's probably at least worth a look. I think you'd feel better about the investment if you found an ereader that you thought was a sufficient improvement over the one you have now.

(If it helps? My girlfriend and I went from thirty five boxes of books to three due to replacing paper copies with ebooks. Made a huge difference for us.)