For me Marco Antonio Barrera, Roy Jones and felix trinidad & Delahoya. Floyd Mayweather is good but can you say he's beat the calibre of fighters Barrera, Jones or trinidad did and ODH.
im sorry he has'nt yet IMO because he skipped through divisions missing one or two top dogs along the way wheather you think he beats them or not he picked up a belt at lightwelter missing both Tyszu and Hatton. and he did'nt stick around to try and force a fight a moved up fighting a past it Gatti, On the slide coming off a defeat Judah then beat a limited although strong Baldomir. His fight list is'nt as impressive IMO yet but he has the abilty to overcome all of them and age but as for yet IMO he not in that class yet he needs to beat 2-3 more fighters with 2 big fight in there.