The Kindle. The non-brand eReader doesn't even have an e-Ink screen, it's got a TFT LCD. If you want more memory (4 GBs), you could probably find a refurbished or used Kindle Touch in your price range also.
The first one listed here ...
http://www.amazon.com/Kindle-Touch-e...s=kindle+touch
... is used "like new" for $55.
Or go here for other choices ...
http://www.amazon.com/s/ref=nb_sb_no...kindle%20touch
Good luck.