I'd have to say Duran when he was at lightweight. Also, Hagler. Mind you, maybe that's because I've just finished reading 'Four Kings'. A brilliant book. Top quote - 'Billy Hearns was taunting Hagler from across the ring. Seemingly oblivious, Marvin continued to shadow-box. " I saw him", recalled Hagler later. "I was thinking right then 'all you're gonna do is get your brother's ass kicked' ".