I'm sure this will rip some kind of hole in time and space, but here goes.
1. Harry Potter and the Order of the Phoenix - MOVIE
2. Harry Potter and the Goblet of Fire - BOOK
3. Harry Potter and the Deathly Hallows - BOOK
4. Harry Potter and the Goblet of Fire - MOVIE
5. Harry Potter and the Half Blood Prince - BOOK
6. Harry Potter and the Sorcerer's Stone - MOVIE
7. Harry Potter and the Deathly Hallows Part II - MOVIE
8. Harry Potter and the Chamber of Secrets - MOVIE
9. Harry Potter and the Prisoner of Azkaban - MOVIE
10. Harry Potter and the Deathly Hallows Part I - MOVIE
11. Harry Potter and the Sorcerer's Stone - BOOK
12. Harry Potter and the Chamber of Secrets - MOVIE
13. Harry Potter and the Prisoner of Azkaban - BOOK
14. Harry Potter and the Half Blood Prince - MOVIE
15. Harry Potter and the Order of the Phoenix - BOOK
Order of the Phoenix was a sprawling mess of a book, spread too thin and drowning in too many subplots and side stories. It stands as my favorite screenplay adaptation for bringing so many of those stories under a cohesive shell.
Half Blood Prince is a great book, but I remember thinking large sections of it were going to be uncinematic as Rowling was drawing out the drama. Turns out I was right.
On one hand, my problem with Azkaban is that Alfonso Cuarón is too distinct an auteur, so the film stands apart from the series because of it's particular visual pleasures. As you can see, I'm not a fan of the original book and that's due to the clumsy final third, which has 3 Chapters in a row in the Shrieking Shack followed by that time travel climax, which many found clever but I just saw it as Harry putting everything into place at the right time. There wasn't any actual danger like defeating the Basilisk in Chamber of Voldemort in all future books. He knew exactly what he had to do, so we just followed along while he did it.