I am doing some research into the different portable ebook devices.
Everyone has heard of the Kindle, now we are hearing of the Nook, and all the ads for the Sony with celebrities are making some impact.

What are the top selling ebook devices?
1. Kindle $300
2. Sony Blue Digital Book Reader $300
3. ECTACO jetBook e-book reader $200
4. Franklin eBookMan
5. Easyread (Personal Digital Reader)
6. Hanlin eReader

Here’s a good resource: It’s a grid of the top 10 readers
https://ebook-reader-review.toptenreviews.com/

Here’s another recent SodaHead post with some comments:
https://www.sodahead.com/technology/e-reader-which-is-the-best-portable-electronic-reader/question-739341/