I have I think a 2nd gen Paperwhite and I feel like the main "problem" I have is that the reading experience is more or less perfect. It could be much faster and more convenient to shop for new books, but I rarely do that on the device anyway. But when it comes to reading a book, I am so used to the Paperwhite 2nd gen that I would pay a significant premium to get a like-for-like replacement than some new model.