Present: Mayweather, Hopkins, Pacquiao, Ward, Donaire, Dirrell, Canelo (I don't count Roy, and Toney as present since they're washed up). All time: Ali, Robinson, Leonard, Tyson, Hearns, Arguello, Jones, Toney.
Present: Manny Pacquiao, Gennady Golovkin, Canelo Alvarez, Takashi Uchiyama, Lucas Matthysse, Marcos Maidana, Brandon Rios, James Kirkland, Magomed Abdusalamov, Tyson Fury All Time: Oscar De La Hoya, Mike Tyson, Aaron Pryor, Manny Pacquiao, Marvin Hagler, Roberto Duran, George Foreman, Julio Cesar Chavez Sr., Kostya Tszyu, Roy Jones Jr.
I want to say Floyd all time because you can have so much fun trolling about the Saviour Of Boxing,but alas JMM is my favourite active fighter,with Floyd a notch or two behind with Froch separating them. All time? The guy in my avatar(with shorts on!) and Marco Antonio Barrera. So many vying for the other places in my alltime 10,with Johnny Tapia having a residency in my heart forever.