The third Harry Potter movie continues the fine tradition of being largely faithful to the source material. Alfonso Cuaron works The Prisoner of Azkaban with a decidedly darker, more gothic sensibility, and he handles shots and drama with far more skill than Chris Columbus ever did.
I had to abandon my UK Bloomsbury paperback editions of the first four Potter books, together with many others, when I moved from Chicago. It was painful at the time of course, but I don't miss those books at all now. Not even the Potter ones. Hmm... is The Order of the Phoenix any good?