It can be a tricky one. Normally books will be better than the film adaptations. That owes a lot to the differences in the medium, and mainly the length of them. Sometimes a skilful rendition is made, but usually I prefer the book. I was surprised that given I couldn't even get into this book at all, that the film not only appealed, but was far superior (in my opinion) to the book. It happens some times, I guess.