I really liked Apostle. Again, not as scary as the trailer makes out, but I got a really nice vibe of The Wickerman from it. There was a good deal of actual suspense from it and it wasn't predictable or prone to tropes as some horror films tend to be nowadays.
I also watched Calibre recently on Netflix. Not a bad film at all, more a thriller than a horror if I'm to split hairs, but suspenseful all the same. And deliciously awkward in parts.