My DS7 used to love the Droon series, but now has moved on to Guardians of Ga'Hoole and the Dragon Slayers Academy books. The Guardian books are intense, and the DSA books are hysterically funny. He alternates between the two. -- FYI: I just heard that they are making a Guardians of Ga'Hoole movie that will be out next fall. I think it's great when the kids can read the books first and then compare them to the movies.