I am on my second EZReader Pocket Pro (AKA PEz).
I got the K4NT for my wife for most of the reasons that I did NOT want a Kindle: Very simple to use, Has the Amazon store and support locked in.
I like the K4 hardware, Non-Touch, Pearl display and all.
But for my next device I want non-Touch (for page turn, and it is optional, only when Menus become active), E-Ink, native EPUB and ADE (DRM) support are required. (PM suggestions welcome

)