Name some fighters and specific fights where they were in their absolute prime

For example, I think both floyd and Manny were at their best at 140 lbs! I think Manny was at his most deadly/explosive/complete self when he fought Hatton. And Floyd had the amazing speed and good power to match his great technique and defense when he fought gatti. I'm basing it not necessarily on when they were physically at there best, or their biggest wins. It's fights where they were at their most complete self: where they had the physical tools, experience, ring IQ etc and had that all together. Other fighters at their best imo: Bhop when he whooped Glen Johnson The Roy that beat Montell Griffin Donaire that ko'd montiel