Harry for his righteousness, courage, and loyalty
Ron for his light-heartedness, loyalty, courage, and sense of humor
Hermione for her intelligence and courage
Snape for his capability (being a double spy and a potions master and an expert in DADA and dark arts and all that)
Luna for her interesting mindset and view of the world
Neville for his courage and determination
Ginny for her character development, understanding, and sassiness
McGonagall for her fairness
Dumbledore for his seeming ability to predict the future and his ability to see through and manipulate everyone (it's pretty amazing)
I'll stop now.
