I would vote Psy, just because he's annoying me, though apart from that, he doesn't seem Mafia, so I don't suspect him.

The person I suspect the most would probably be GB, because of his Cop hunt. Either he is the Cop, or he wants to find the Cop, to kill them, because he's Mafia. Or he could be a townie. I think it's more likely he's a Cop or Mafia.

I'll post more later.