My favorites on the site are Berserk, Gantz, and Zombie Hunter. And while I keep trying to find something else that I would enjoy, nothing seems to be nearly as good as these.
I love games of survival, but for some reason don't want to read Battle Royale. I own the movie and the book and don't see the manga surpassing those. I really like normal people being thrown into situations where they have to fend for their lives against others and/or monsters and the like. Anything with zombies, vampires, werewolves are a plus, as well as gore and taboo bashing material.
I really don't like stuff like Naruto, One Piece, Bleach. I really can't stand a lot of that cutesy stuff.
Thanks to anyone/everyone that suggest something.