Pottermore-Based Sorting Quiz
In short, I get fed up with all the Sorting Hat questions that would ask, of all things, what your favourite colour was. Many of them portrayed Slytherin as evil, Hufflepuff as nice, Gryffindor as simply brave, and Ravenclaw as the smarties.
While I have no way to look inside J.K. Rowling's mind, I have looked at the books, the Sorting Hat's speeches, and Pottermore's Sorting quiz to piece together a Sorting quiz that, based on your value system, places you into a House. No guarantees it will be perfect, but I do promise it will be better than the Sorting quizzes that put you in Ravenclaw because blue is your favourite colour.