No direct experience. There was no smoking gun during my research into models. I passed on touch screen options on a dedicated reading device because I didn't see enough increased usefulness vs. reading through smudges. Sony's felt the worst in my hands and receive the poorest reviews. Other than that, it came down to how they felt for comfort and build quality and the fact that I was already very accustomed to buying books and music from Amazon and I have been very happy with their service so I suppose mentally, it seemed easier to make the jump.

With great power comes Awesome irresponsibility.