It really depends on the style you like and the era(s) you're interested in. Here are some:
Sinister
The Den
Cabin in the Woods
Mama
House of 1,000 Corpses
Dead Snow
The Descent
Cold Prey
Thirteen Ghosts
The Exorcist-Director's Cut
All the Boys Like Mandy Lane
The Texas Chainsaw Massacre
I could name a ton more if I knew what you were looking for
