10, I have to say the best books are 3, 4, and 5. 1 and 2 were okay but she had to work up to get to her best book (3) and 6 and 7 didn't seem nearly as well thought out.
Sadly Tonks has a fairly small part. Lupin has a bigger part (he's their teacher, he's a werewolf, he was a friend of Harry's dad) but not nearly big enough in my opinion still
9, I can see how it's like that from what I've heard. The only other thing that tempted me was the fact that I like the actor who is Edward, he was cool in Harry Potter 4