Although I do love all the books, if I had to choose one I'd say I have developed a an appreciation for Deathly Hallows. The way JK wraps everything together is so perfect. The final moments of each character are so vital to their identity development. I especially love the revelations of characters we were trained to dislike or look passed that took a positive turn (relatively speaking) and left little grudge room for Harry and readers. On another note, we observe Harry grappling with the choice between horcruxes and hallows. I believe that everything he has experienced and learned has brought him to this juncture, where even the slightest deviation could profoundly shape the wizard he becomes.