Welcome to MobileRead, drjrwalton97!
First of all, I just want to clarify that "ebooks" are actually the files that we read on our reading devices or computers. I say that just to make sure you are actually seeking information on the reading devices themselves. In MR's Wiki, there is a great comparison chart, the
Ebook Reader Matrix that shows the available readers with their specifications which may be helpful to you. I love ereading and hate it when I have to wait for a book to be released in ebook form. I just think electonic readers are incredibly convenient. I am on my third reader, the last two of which are the Sony 700 and 600. Good luck.
Happy Reading!