ArmoredFoe
Kill or be Killed
This is true, you can subgenre specific, or even classic or modern horror only. I've meet quite a few people that won't watch anything past 1950. However if you're going to name off a bunch of films like Halloween and Friday the 13th and call yourself a big horror fan, but you've never heard of The Prowler or The Burning, then we can call him out on it all day long.
Those 2 movies alone change my life as child. Especially with the Burning. While I love Jason, something about Cropsey that I almost love more than Jason himself even though most consider The Burning a F13 ripoff. I don't care. Same with the prowler, such an awesome killer and the kills themselves in the Prowler are nothing but pure brutality.
I have a few friends like this as well that talk a lot of horror game, but really haven't seen much past the typical mainstream stuff.