I really do! It was a pleasant surprise, as I didn't know that Morrell wrote in that genre. I tried to read Horowitz' Moriarty right after reading Murder As A Fine Art, and had to put it down. Horowitz has written kids' books for a long time, and his style just didn't compare to Morrell's; I'm sure that if I read Horowitz' books with some distance from Morrell, I would have liked it better. He is a good YA author.
I agree about re-reads, too. Just last year, and after several re-reads, I finally enjoyed The Gunslinger! And I didn't really appreciate The Dead Zone until I was an adult and the political subtext hit home.