Verdict? So far, I'd have to say I still prefer the book, because my kids aren't asking for a turn on the book, but they do ask for a turn on the ipod. Plus, a book, I can borrow from the library, (but honestly, I don't make it to the library very often, and I've heard you can borrow ebooks from libraries now).
However, you can find lots of ebooks for relatively cheep. 99 cents for a few hours of vacation from your mundane life can't be beat. You don't have the physical book to find a place for on your shelves.
Of course there are more reasons than the ones I've given, but I think a book, in any form is a good thing. Reading is awesome.
I'm sure I'll be reading more books in both formats, but if the book is so outstanding I want it for a second read, then I'd probably do it in actual book form.
Speaking of ebooks. I'll be doing a contest for a free ebook, so check back for details and let your friends know so they can follow me too.