According to the email I received this morning, this is what is hot on Audible.com for audio books:
Most Wished For Science Fiction & Fantasy
Take a peek at what your fellow listeners are wishing for. You might discover a book you never even knew you wanted!
Have looked at The Rook, but not purchsed it yet. Narration seems a little bit iffy to me.
The rest really are not on my radar at this time.