Which one is the scariest?

Which of the following movies is the scariest?

• The Omen
• Psycho
• Amityville Horror
• Rosemary's Baby
• Friday the 13th
• Poltergeist
• Nightmare on Elm Street
• The Exorcist
• Halloween
• The Shining
• American Werewolf in London
• The Fog
• Blair Witch Project
• Saw
• The Ring
• Hellraiser
• Dawn of the Dead
• Texas Chainsaw Massacre
• The Vanishing
• Carrie
• Night of the Living Dead
• Children of the Corn
• The Hills Have Eyes
• Evil Dead
• The Descent
• Other