If hes going to fight for a title then Cintron is probibly the best option having said that in a few more fights i think he could give Cotto a run for his money as Cotto hasnt got the greatest defense in the world but he is a f**kin animal and would probibly rip Bertos head off if he got careless. Williams is too big and would keep him at bay with the jab all night long and Mayweather is too slick and would catch him everytime he drops his hands when he backs up.