All books are better than the films version.
In what sense should we be ranking best - worst?
Because as far as adaptations go, The Shining (for example) is in the strictest sense remarkably poor, yet it has so much to offer as a film and I'm much more inclined to revisit it than I am the book.
On the other hand, the Harry Potter films are largely faithful to the books, with most of the cuts and alterations being subplots that are relatively minor compared to the main plot, yet I find them to be rather messy and dull affairs on the whole.
I take it more in the sense of a book that translated well into a movie regardless of following the books to a T. I think it is more of getting the point of the movie on the whole as opposed to each point, point by point. Otherwise if it is the exact same then it could get boring. Like your shining example, the book is probably my third favorite Stephen King (behind the Stand and believe it or not Needful Things), the Kubrick Shining however as you mention deviates but is just a classic. However Stephen King didn't like it so much that he re-filmed it and there is another Shinning movie that does stay truer to the book and that one is less than OK. Shining is a good example of both a good and bad adaptation when you think about it.
Also you have to factor in acting and directing with a movie. With a book its you own head.
Another example would be Philip K Dick (who by looking at Wikipedia actually had a lot of film adaptations also) with Adjustment Team short story which is used as the basis for The Adjustment Bureau and Blade Runner.
Though regarding your HP comment, that will cost you an infraction the next time you badmouth HP. Both the books and movies are great. If each movie went into each subplot there would be 20 movies, and I would be ok with that. End of discussion.
It was a made for TV miniseries, not unlike the Stand or langoliers (bad adaption, btw). Stephen King like had a much closer hand in it, making sure it did not deviate. It is less than stellar. It is one of the few movies and books I did not read.Fair enough, then put the Kubrick Shining down as a good example.
Is the other adaptation a miniseries? I think I've heard of it, and not in a particularly good way. While we're on King adaps, 'It' is a rather poor one. I really liked the book, so the film crushed me with its bland woodenness.
I haven't read any Philip K Dick, but seeing how the various film adaptations have wildly different tones, I'd be very interested to find out what he's like.
Mod brutality! Mod brutality!
To be fair, I actually rather liked the books. And while the films are actually reasonably faithful adaptations, (various minor cuts aside), the problem I had with the films is that they prioritised plot over story, if that makes any sense to you. I'm no hater!