Best Horror Movie?

I am very partial to slasher flicks and 80s horror movies. So I love the first two Halloween movies. I also really like the Nightmare on Elm Street movies; the first one is the best, but number three I think has a great 80s rock soundtrack if I remember correctly. I will say that the Scream movies are a guilty pleasure of mine. The first one is great, while the rest of them are mediocre.