Which Harry Potter book is your favorite? And why?

[TeafortheSoul]

Which is your favorite Harry Potter book?
And why?

The original seven works of J.K. Rowling captivated the hearts of young and old alike, but just which of them captivated yours the most?! Why is that? Were you transported along with Harry and his companions as an 11-year-old into the wizarding world in Harry Potter and the Sorcerer's Stone? Perhaps learning the tragic back story of Tom Riddle in Harry Potter and the Half-Blood Prince was more your cup of tea? Or maybe it was seeing it all come together in its epic conclusion with Harry Potter and the Deathly Hallows that truly captured you. Whatever the reason, this is your space to share your favorite book and why!

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[Raistlin]

I'll always have a soft spot for OttP. That's when the stakes really amp up, and when we get the extended dream team of the trio + Ginny, Luna and Neville.