I have no opinion on kindle since I have never seen or used one.
However let suggest an alternative way to read books, read them off a netbook computer.
Those are new very light (three pounds) laptops which have a long battery life, they cost around $400 (a kindle costs about $260). They have a 10'' screen.
For the difference you get a full computer on which you can do your email and browse the web or even edit your pictures.
Here are a couple of netbook suggestions:
view linkview linkHere is the one I use, I take it to bed or read it on the couch.

For classic works, such as Jane Austen, Charles Dickens, Plato etc.. on which the copyrights have expired you can download these free from Gutenberg, for example
view linkYou can also get an ereader software and download recent books from fictionwise around $6 for most books. These are not your top shelf authors but still not a bad value.
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