I agree with Mrj0, the Nook deserves a mention. I received a Nook Simple Touch about four months ago and have since read about 10 books. Before the Nook I read probably two books a year (cover-to-cover). The biggest reason I've burned through so many books is because of its ePub support - I had a backlog from O'Reilly, PDF books and others I'd gleaned through the ages. Since then I've purchased additional titles from both O'Reilly and Barnes & Noble, and both work fantastically. So far I've had the best of both worlds - digital distribution and (usually) no DRM thanks to O'Reilly and Google Books open circulation.