Hmmm...These are some of my thoughts:

Right now, the only ones I have really begun to see as trustworthy are Bahamut2000X and Del. Not that I trust them completely, but I see either of them taking on a role similiar to Psy in the last Mafia game.

Sorry, LoM, you do seem scummy to me. It's a mix of gut feeling and your spazzy behavior. It's still a bit too early for me to be certain though. AK would be second on my list, but that's just going on what i've seen from the last game.

Laddy, I haven't found very suspicious. The same goes for Lancealot and Qwerty.