This week I chose to go with Leviathan by Scott Westerfeld, the hardback cover.
It really saddened me that they changed the cover for the paperback by putting a face on it, and I'm equally disappointed that they did the same thing with the sequel. These new covers are okay, but I really loved the old one.
At least I always have the hardcover on my shelf to stare at. Now I just need to read it...lol.
The new cover: