Horror Movies

I really don't have a favorite horror movie. Like some movies that I really like are the Halloween movies, Nightmare in Elm street movies, Haunting in Connecticut, Paranormal Activity, and there is a couple more but these are just some examples. For scary movies that I like, I guess they have to be super scary. Like they have to leave you shaking and terrified after you watch them. And they need to have an original story line, not like a sequel that has elements seen already in other movies.