If a book is available as an ebook, I prefer that format. Followed by audion and plain old paper. I have an H2210 Pocket PC. I can read it anywhere, do not need a light to read in bed, can keep track of time very easily, and can annotate or bookmark
anything in context. I prefer Microsoft reader over the rest, as well.
Same with me.
I have also been checking e-books out from the library.