Unfortunately, I have read the books and felt that the movie could have held up to the previous films standards in keeping in crucial information. Some more of the memories or at least the explanation of Voldemort (from the memories) could have been factored in. In some ways, the film felt as though it were jumping from Quidditch post to Quidditch post.
Overall, not horrible; even pretty good -- but still, I would have paid to sit an extra half hour for a little more detail into some of the parts (like explaining why Tonks doesn't look like herself and what happened there, too).