I tend to go for Carlo, for the simple reason of being in power for 20 years as opposed to Luciano's five years. Carlo also had close ties with the major Sicillian bosses with whom he had set up a vast international heroin pipeline. Luciano basically exploited the power structure that was set up by others before him. One thing is for sure though, both are among the most interesting and legendary Mafia figures in history, along with Morello, Maranzano and Bonanno.