IF you end up with an Amazon product I strongly recommend not connecting it to any network, even (/especially) if you never intend to purchase books through their platform. I recently read about some people losing access to massive libraries / collections off their devices after having one suspected pirate copy of something detected remotely on the device.
Anecdotally my housemate gave me her old one and it too got remote-wiped. I get the impression it doesn't happen that often, or we'd see more people complaining about false positive bans and deletions, but yeah.. just be wary of Kindles and any of their convenience features. I know a few people on here use them and like being able to upload via email etc but it's a gamble.