Neither

While I still like Billy more than Jason, I will nonetheless agree that he's insane and that if I was with Billy things would end up badly.

With either of them. I know neither of them is truly evil, but i'm not sure if i want either of them next to people i like.

But even before Vecna corrupted him, Billy tried to run down a couple of kids just because one of them was African American.

In that case, i would say Billy is worse than Jason. I might have to watch the series deeper, but from the sound of it, Billy is technically evil rather than well-intentioned extremist.

@X9 The Android and who knows what he would have done to Lucas if Steve hadn't been at the Byers house.

@Romeo and Robot don't give me nightmares, please. Racism sucked back then and still does so: no matter how tragic Billy is, he still did many things he wasn't forced to do:, as I doubt Neil ordered him to run over African American kids if he saw them while driving.

Or encourage him to sleep with married woman.

Yeah, that was sick: Billy fully knew MIke's mother was married and tried to seduce her. Granted, I do feel that maybe Billy wanted to romance her due to her reminding him of his mother, but it was still selfish from his part trying to do so if he knew that doing so would shatter her family. Maybe Ted isn't the ideal family man, but is loyal and works hard to provide for them.

Karen should have at least divorced Ted before trying to sleep with Billy.