There have been
issues 
,
Like Paint that could not be predicted.
Then there is The Battery charge issue, that only seems to hit a tiny portion of the users here on Mobilread, which falls into the Norm of failures .
There is the USB 2 not playing nice with certain (fairly common) USB chipsets that really needs engineering testing to figure out what is happening under the hood.
Bottom line.
I does the job I wanted done. Display books on a sharp, easy to read display without a lot of frills (WiFi, Back lighted Color display, touchscreen) , or being locked to a proprietory content source.

