PBF, though as a person he's a one-dimensional king cnut. Lennox Lewis was a heavyweight and not particularly fluid, so people don't realise how versatile he was. Virtually every fight was something different in his last five years. Helluva fighter and easily number two for me.
A lot of what JMP said earlier on is there for show in McGirt II. Its an absolutely brilliant offensive display against a fighter who was himself very technically sound. For a guy considered to be a light-hitter Pernell uses every offensive tool he has to nearly spark out the very durable and cagey McGirt.
Haugen, Chavez, Nelson, Ramirez II, both McGirt fights, and Nelson are all great displays to check out. Also liked the Harold Brazier and Roger Mayweather fights a lot. Haugen, McGirt rematch (refer to what LancsTerrible said), and Nelson are my favorite performances.
Performance wise, i would say his fights against Haugen, Ramirez 2, and Nelson are Pea's best fights IMO.
Holyfield or BHOP......ducked NO ONE, fought nearly every big name and adapted to changes in the game both inside and outside the ring. Both Floyd and Ward have only been able to maintain or achieve their elite status because they have great mgmt and are able to avoid the fights that would derail their careers and expose their limitations against fighters with styles that would offset their skills.
Hopkins has much better lateral movement and ring generalship, IMO. Hopkins can also force the fight inside on his own aggression (not just defensively counter in the pocket, which Floyd is indeed great at.)
often floyd does not need to move laterally because he can fight of the ropes, that is versatility but i do agree bernard has superior lateral movement
Mayweather or Hopkins, either one is justifiable. Even when Hopkins is losing every ten seconds of the first two rounds of a fight, he finds a way to end it.
I don't know about ring generalship. You can make a case for lateral movement but Floyd doesn't use that unless it is necessary. Hopkins has problems when the fight isn't slow paced. That is why he whipped Pascal with ease and struggled with Joe. Floyd controls the pace of the fight in almost every fight he has been in.
The thing is, it has seemed necessary before, or at least beneficia, and he neglected to use it. He's been able to measure fighters coming in well enough to counter them or press the attack, but getting tagged and backed up against DLH, Judah, and even Ortiz show that he would have done well to use lateral movement. He still ends up winning dominantly, but in terms of versatility, I have to give it to Hopkins for being able to control the angles and reclaim the center of the ring better and more consistently without so many moments of straight-lined vulnerability. The Calzaghe fight was close, but that's an exception to the rule when he's been facing just as good or arguably better competition; Floyd struggled to control the pace against DLH, Castillo, and Hatton. It's not a knock on him, but it's just the reality.