Obviously, all of the Harry Potter books are amazing for different reasons, but Prisoner of Azkaban is definitely the best.
Harry Potter and The Prisoner of Azkaban - 2004 haha from the angle of the pic it looks like rons wearing a slytherin tie
Harry Potter & The Prisoner of Azkaban by Florey, via Behance
He does have two shirts because he was seen wearing a short sleeved one in Prisoner of Azkaban
Harry Potter and the Prisoner of Azkaban by PigandPepperArts
I personally identify with Ron all the time, but the tap-dancing spiders dream really hits home for me.
How cute is Hermione in this deleted scene from The prisoner of Azkaban
DanRad's is Chamber of Secrets. Oddly enough, my favorite is Prisoner of Azkaban and my least favorites are Chamber of Secrets and Goblet of Fire!