No Evil Dead or Phantasm?What sorts of genres of Horror are you interested in seeing? That would help with recommendations.
I don't keep a top 10 of my favorite horror films around. But if I had to pick 10 'classics' it might be like;
10. The Beyond (1981)
09. The Mist (2007)
08. Poltergeist (1982)
07. The Exorcist (1973)
06. Last House On the Left (1972)
05. An American Werewolf in London (1982)
04. Halloween (1978)
03. I Spit on Your Grave (1978)
02. Martyrs (2008)
01. The Thing (1982)