Then there's the Silk Pagoda offering of 10,000 books in Sony format (sized PDFs.) Reading all of them should take me to the end of the battery life on the Reader assuming that I don't pick up a few others along the way.
What would be your choice when the Iliad and Sony would be the same price?
Not a valaid question. The Iliad is currently over twice the price of the Sony. The converse would be, "If they kept their current price levels and the features were identical...."