I have had a Sony reader for a little over a year and I am extremely happy with it. I am very interested in the ibook portion of the ipad. Will it have the epaper format to make it easy on the eyes like the other readers? Will the Sony ebook library files work with it? Any idea on the availability of books with this? I am not as concerned with pricing as I am availability. I am concerned about selling the Sony Reader in favor of the ipad then having trouble getting the books I want and/or not being able to use the books I have already purchased from Sony.