I chose to be a law bringer and join the Regulators.

Its funny that their hide out is at a barn of all places. Even the Talon Mercenaries have better hide out. Although my guy is a good guy and I felt it was extra caps and good karma to take up the perk.

Is the Sheriff of Megaton a regulator just keeping the peace?

All my characters have been good guys and a few of them have taken the Law Bringer perk if the character is law bringer type of character.

Depends on the character. All my characters are a little bit different and none of them are me.

But I'd guess that, on average, more of my characters have probably taken the Law bringer perk than Contract Killer.

I always choose Law Bringer. Although I find it has to be pretty disgusting for my character to carry around a bloody bag full of fingers. Better then ears I guess lol but still. I don't think I have turned in less then 150 at a time.