When it comes to choosing between movies and books, it will depend on your level of understanding. If you tend to find books easy to understand, then that is better for you. Each individual has a different level of understanding. There are others who find audio books better compared to movies and novels.
Because I love reading so much, I tend to not watch movies after I've read the books. The movies never seem to measure up to whatever I experienced when I read the books. On the other hand, once I've seen a movie, I don't really see much point in reading the book since I already know the story line.