There are many good poker players and I strongly believe that anyone who makes a living out of poker should be considered the best. However, I believe 5 of the best poker players that I admire are: Phil Hellmuth, Daniel Negreanu, Phil Ivey, Doug Polk and Nathan Williams. But there are many others that I admire just as much and it's really unfair to stop there. However I would recommend reading all the greatest player's books to learn more about their way of thinking and playing.