Here's an interesting one that may not be listed above...
http://m-ook.com/post/1/166
"Who needs Blu-ray? This is the Sony reader that usesthe display technology from I’ve been hearing so much about. To give you an idea of just how good this display looks… I walked up to the counter, looked at the text on the screen and asked, “So when will you have working units to play with?” The reply: “This is a working reader.” I mistakenly though[t] the text on the screen was some kind of plastic overlay—that’s how ink-like it looked. Then the PR rep increased the text size, searched through the table of contents and showed me some Manga comics. It is the first e-reader that seemed like I could sit down and spend hours on without experiencing eye strain."