Erik Seidel has been a top player for a long time. He is an old-timer who has been able to adapt his game to the new breed of poker players (young and aggressive).
Tournament: Phil Hellmuth of course
Cash game: Negreanu, he is the shark of the sharks
Marcier is ok but Kassouf... hmmmI think Hellmuth tops them all.
Should have included Jason Mercier and William Kassouf too with the list.