IMO the guy who sticks out is Aaron Pryor. I think he has a legit claim to be THE most ferocious fighter of all time and moreso then any of the 3 listed he never lost that fire at any point in his career. I remember he got knocked down once I forget by who and he bounced right back up and had the other fighter covering up as Pryor charged back then the ref got in there and issued the count. Was awesome.