I stopped using my kindle years ago. I have the original one with the keyboard (before it was called the Kindle Keyboard). My biggest complaint was that Amazon didn't go with the epub format and while I can convert with Calibre I've found that sometimes things don't convert properly. I now just carry a 7" tablet around and read with that instead of the kindle as I read magazines more than books.

My wife has a Kobo and dealing with content is so much easier as I find a lot of stuff will have an epub but not azw.