Thanks for the work A J
The sample size is still small yet, but the much talked about Clock is not doing well

I only marked those I considered
Important enough to affect the purchase or future recommendation.
A few of the items I did not mark were the "tie breaker" decision items.
The one item not on your list, was "DRM type supported is not tied to a single book vendor/store". (not the same as a single type of DRM)