It's not an e-reader, it's a Kindle.
An audio player that played proprietary files by exactly one record company would be obvious bullshit.
Somehow publishing has allowed itself to be squeezed into the e-reader equivalent. The result is a predictable lack of quality in both hardware and software - never mind consumer choice and delivery options.
Yes, you can dislike the Kindle, but to say it's a bad e-reader is like saying a bicycle is a bad car.
All I can tell about it is that it’s a mediocre reader and that’s it. I don't upgrade it to any other reader because it just works, so I’m going to keep it till it won’t.