Best Harry Potter book so far?

Question:

Best Harry Potter book so far?

Whats your least favorite harry potter book so far (doesnt mean you dont like it but if you had to choose) and your favorite.

Best Answer - Chosen by Asker: My least favorite book so far has to be The Half-Blood Prince simply because Dumbledore dies. My most favorite is The Goblet of Fire. It had so many new characters and I loved the idea of the Tri-Wizard Tournament.