Looks like a fun tool. Some recommendations:
In your price category you have
$400 and higher ...
$399 to $200 ...
$100 to $199 ...
It would be easier to read if the middle category read "$200 to $399" to be consistent.
It would be nice to see the other Sony readers on here, as well as a choice category for touchscreens.
I find the wording of this category "Does the ereader support ebooks on PCs, Macs, cell phones, and tablets?" confusing, but that could just be me. Do you mean ebooks formatted for the device, ebook software by the makers of the device, or something else?
Lastly, I'm glad you use citations for the more subjective criteria, I think that's a great idea.
Overall, the format you have given it is quite nice.
