Quidditch looked like a videogame in the first 2 films, and I don't mean that as a compliment. Here, it wasn't prominently featured, but because of Cuaron's decision to follow the rules of special effects i.e. when something looks fake, shoot it in the dark so no one can tell, it looked much better this time around. I agree with Galahad; definitely the best of the three so far. If you want a slavish cramming of as many events from the novels as possible into the film, stick with the first two; if you want to see an actual Harry Potter movie, with atmosphere and artistry (as well as much better acting), go with this one.