The basic Kindle, the Kindle Touch, and the Kindle Paperwhite.
assitant
The basic Amazon Kindle, the Kindle Paperwhite, the Kindle Voyage and the Kindle DX.  And there is also the $99 Kindle for Kids.
assistant
I'd like to buy an eReader, but I don't know which to get. Do you have any recommendations?
user
You could get the Amazon Kindle or the Barnes and Noble Nook, but if you have Amazon Prime membership it might be better to get an Amazon Kindle, since it comes with the Prime membership for a year, and is otherwise a little cheaper.
assistant
What models of Kindle are available?
user