Manny has it at the moment, he is a great toe-to-toe fighter and has fought the best in his division. Floyd would be a close second though especially after beating Oscar.
I would have to say Roy Jones Jr. He has always been one of my favorites and I can't wait to see his upcoming fight against Anthony Hanshaw to see if he still has it. He has a record of 50 Wins, 4 Losses, 38 Knockouts and was in my opinion the best pound for pound ever.