re: Who was the toughest character on The Sopranos?

I loved the episode where Furio went into the massage parlor to collect and ended up punching out the little Asian woman.

Another favorite was the episode when Arnie made the bad investment with/got conned by the French guy. Tony buys out Arnie's business interest at a discount. The closing scene is the Frenchman answering his door to Furio standing there. I so wanted to see that guy get his arse kicked.