Fedor Holz is a well-rounded poker player, heads-up, cash games and tournaments, he has it all at a young age. But he's retiring gradually from the poker scene.
Legends like Phil Ivey and Daniel Negreanu are great obviously. I have some doubts on Phil Helmuth lol, even with all the bracelets, I would say he's good not great.
Honorable mentions to Dan Coleman (tournaments) and Doug Polk (cash games)