The book was an excellent read. I don't know about elsewhere, but here it was sold under the counter in bookstores -- meaning, no free display, and you had to request it by title.
The film was average -- not well done but not badly done.
I was disappointed by the omission in the movie of, what was for me, 3 key scenes.
1) The gay guy -- where he picks up the dog and slashes its belly open -- although the movie version was just as grotesque.
2) The kid in the zoo (from memory it was a zoo)
3) The 2 hookers scene -- that was not done to my satisfaction -- I was looking forward to one having her eyelids cut off, whilst the other had the acid, PVC tube, rat and cheese put up you know what.
I know they would be overly violent and graphic scenes for a movie, but I believe killing the kid really did set the scene as to how totally farked up this guy was, and the hooker scene would have shown his ingenuity