I'm the same, absolutely love horror movies, but I've found that a lot of the recent ones to be rather bland. Agree with you on The Descent, that was one of my favourite horrors, and I think a big part of that was seeing it in the theatre. Completely dark space, good sound system, really got you immersed. I think I've been spooked more with a good thriller than the gore-based horror films, or the ones with obvious jump scare setups.
Where I've enjoyed horror as of late is the well done horror satires. Cabin in the Woods, Tucker and Dale vs. Evil, Behind the Mask the Rise of Leslie Vernon, Shaun of the Dead...movies like that have really hit the spot.