Can someone answer a question for me? I don't have either of those just an android based tablet. I have a kindle account on that tablet but I cannot actually download books to the tablet. Even though I "buy" the book, I can only read it if I have a wifi connection. Obviously that won't work at the beach. Do either of the units being discussed allow the book to be downloaded to the unit so that it can be read while traveling or on a beach or anyplace without a wifi or cellular connection?