I went with a Nook Touch instead of a Kindle, because it is very easy to get your hands on standard epub and load them at will. Loading e-books from outside the Amazon ecosystem can be done, but it is a cumbersome process at best. The Nook feels less tied to the B&N ecosystem than the Kindle is to Amazon. This is true for Sony and possibly Kobo as well, but I prefer the Nook as a device.