Writer's Block: Birthday Shout-out

Happy birthday, J.K. Rowling! Which of her seven Harry Potter novels do you think is the most satisfying read?
All of them I have enjoyed but I think the one that has always stuck out to me the most would be the Goblet of Fire. I think that is the book where they all really make the transition into becoming adults. Rowling did an amazing job in showing this. I am always rereading Deathly Hallows right now, and I have to say I am enjoying it more then I did the first time, even though there is a lot of death.