Absolutly the Sicilian bosses who've founded the Cupola. Further i like the toughness of Salvatore "Toto" Riina and Bernardo Provenzano.

I don't know that much about the American Mafia AKA The Mob, but i think that Lucky Luciano will make a good change, because he is a Sicilian

Contrary to popular belief, Unix is userfriendly. It just happens to be selective about who it makes friends with.