I use an iPad, primarily with Kindle. What I liked about my Sony was that it would take a number of different formats that the Kindle would not. With the iPad I can get those other formats in other apps. Calibre is a wonderful piece of freeware that will convert and aggregate into various formats which makes things easier. A big factor of my buying the iPad was to read various media and the way it handles them. My wife loves her 3rd gen kindle and it meets her needs.