Movie v. Musical v. Book

John Updike's popular novel The Witches of Eastwick has been adapted into a movie and a musical. All three were raved about, instantly popular, but which one is the favored?
MUSICAL
In the musical, there were of course, some changes. The musical starts off with a little girl singing praises about Eastwick. Then the play continues on skipping a lot of Updike's details about each individual and the depth of their inner conflicts. The women continue on to have martinis and complain about the lack of men in their life. Then of course, there are the obvious musical numbers added that are absent from the book.
MOVIE
In the movie, it also has its difference from the book. The movie is of course, Hollywood-fied, and its biggest example of this being at the end of the movie. Darryl, in the book just an average almost broke man, has quite the spin on himself in the movie. At the end of the movie, he turns into an enormous demon and tries to kill the three witches.
BOOK
The book, for me, is personally always the best. I think books always are better than the movie or play remakes. The book was the original, so there was nothing changed about it. It includes the detail, gives the reader the best idea of what is going on, what the scenes look like, and what's happening between the characters. The characters and events are more realistic, the plots more plausible; although the movie is arguably more climatic with its...er...interesting twist at the end.