I have Stanza and Kindle on my iPod Touch and much prefer Stanza. You can read books on either with a similar look, but Stanza is much more robust in terms of tools: highlighting passages, dictionary, etc. Stanza also provides a nice selection of book vendors, and free is always good. Kindle may have more books, but the last two, relatively recent titles which I wanted and was prepared to pay for, weren't available on Kindle. It all argues for a universal ebook format accessible on any reader. I would hate to see the world of books cut up and locked up by individual vendors.