I enjoyed the audio book a great deal more than the movie. I'm not saying the movie sucked, but the audiobook kept two things intact that the movie was missing, and elements I feel that should have been kept in the movie- these being the seduction of Anakin, and the political climate, especially after the the end of the war.
The seduction of Anakin in far more sinister than portrayed in the movie. Palpatine offers Anakin everything, including his life to end the war and return peace.
Members of the senate, known simply as "The 2000" signed a petition asking the chancellor to return his powers to the senate, and to step down. There were a few key meetings regarding this "2000" that should have been kept in the movie.
Oh yeah, one more thing- The best line in the book that should have been in the movie, but wasn't occurred between Grievous and Obi-Wan:
Grievous: "Unfortunately for you, Kenobi, I have been trained in the Jedi
arts by Count Dooku."
Kenobi: "How unfortunate for you, I trained the man that killed Dooku."
Ultimately, we can debate this forever, but in the end nothing will change. Books are often better than the movie. I would encourage everyone to pick up the book or audio book and give them a try. There is much more to the story than people have seen.