If you've read the books go see this movie. You'll like seeing a more faithful rendering of the Deathly Hallows. Ignore the reviewers who say it's slow or too dark, etc. That's what the first half of the book was all about. Harry's insecurity in himself, Dumbledore and his self appointed task.
The downside is the same complaint I've had with this screen writer's five other efforts in the HP series. He completely ignores the parallel structure Rowling built into the books and why this series is so influential. Love, forgiveness, and redemption are cut out over and over. Dudley never tells Vernon, "Harry's all right" before leaving, The kids don't redeem creature and themselves for past conflicts. RAB's story is never told, and worst of all, Dumbledore's back story is glossed over which makes me wonder what they'll do with Ababforth in Part II.
Pro: 4.5 stars, very good rendering of the story's facts