That doesn't make you condescending at all...nothing wrong with giving an opinion.
The book was good, but I actually might disagree with you...I just loved some of the visuals in the movie so much that I might prefer it. I feel the same way about Silence of the Lambs. However, the book version of Hannibal was SO much better...oh, man. I loved Hannibal the book...but they had to fuck up the story (and casting) for the movie version.