I have a sony 600 touch screen but i do not use it any more. I will give it to a friend. I am using the iPod 4. Stanza, iBook and Kindle, plus GoodReader. I am very satisfied with it. I keep it in my trousers' pocket. I read both ebooks that i buy, that i produce my self, usually epub. I can read pdf without many technical figures or formulas. No comics, but those I could not read on the Sony either.
I have excellent eyes (no glasses).
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