You know bugged me in Insomnia? Ed's music choices. They were too old for his age in the book. I was Ed's age, and the stuff Mr. King had him listening to was stuff my mom (Mr. King's age, more or less) would have listened to. I know it's a tiny thing in a book that I enjoyed, on the whole, but every time music came up, I cringed and was yanked right out of the story. Atropos was a creepy little guy in that one, though!True. I enjoyed Insomnia, but, as you said, it could have used a good editor to make it even better.
John