Reverend Trask seemed to legitimately believe in what he was doing. Not saying that makes him a good person (plenty of evil people have believed in their causes), but in this crowd, he's ranking pretty darn high in the good qualities department.
Evan Hanley - eh, pathetic really. Kind of like the Satanists in The Seventh Victim, ultimately just a hack loser.
Nicholas Blair...I do believe in evil and I definitely think he qualified as such. OTOH, it's like hating the third assistant vice president of a failing international corporation. The guy shows up, he does his job comparatively well, when all about him are running around like the incompetents they are and when the chips are down, he's willing to deal. At least Nicholas doesn't really go out of his way to play a nice guy.
Gruesome Gregory - Child abuser, bigot, misogynist, possibly molester, killer. And he's a hypocrite to boot. He wins hands down.