Far and away the best of the series. As a card-carrying Pottterphile, who's read all the books at least twice, I have loved all the films. But this one is as different from the others as the book was. The actors have always been talented, but now they manifest maturity and subtlety I would not have expected. There is a terrific balance between slow, thoughtful character development sections and chair-gripping action sequences. I don't know how easy this movie would be to follow if one were not quite familiar with the series, but frankly that doesn't really concern me.
Production values, as usual, are the very highest. The cinematography seems quite extraordinary to me and, of course, the mood of increasing dread is reflected in the color pallette. The music is superb and augments the emotional feeling of each scene. Even knowing where the plot was going, I found much of the film deliciously scary. I can't imagine that anyone would find it suitable for children younger than teen-aged, but what do I know about kids these days?
All in all, this film is quite wonderful. It was thrilling and touching, funny and tragic and all in all, thoroughly satisfying. I was ready to sit through it again as soon as it was over.