I've read all the books aswell, they are so much better than the movies, except for "The Deathly Hallows" that movie follows the book line by line basically.
The only book I didn't finish was the Flaming Goblet, I mean, I was just a kid when that released and it was 1001 pages, what kind of kid has that kind of patience?
The one that was the most exciting one for me would probably be the Deathly Hallows, I loved how it wrapped up the story in a solid way.
If you like wizards and magic, you'll love this!