Congrats on going Blu, Kyle: I knew it would happen eventually!
Some suggestions from me (many of which have already been mentioned):
Alien Anthology
Dark Night of the Scarecrow
The Innocents
The Living Dead at Manchester Morgue
My Bloody Valentine
Peeping Tom
Picnic at Hanging Rock
Psycho
Quatermass and the Pit
The Texas Chain Saw Massacre
Vamp
Witchfinder General
Plus, if you're looking at going multi-region, I'd also highly recommend the following Region A locked titles:
Assault on Precinct 13
Basket Case
Hausu
Kuroneko
Repulsion
Vampire Circus
Videodrome