Phil Ivey by far. He is cool and calm, but the most intimidating person at any table at the same time. He is absolutely fearless and everyone knows they could be in for all there chips at any moment. He has the amazing ability to put players on hands and maximize his profit off it. Even with him playing tournaments far less than other top pros mentioned, you continually see him at the final table over and over again. His tourney cash rate must be incredible. He plays in the biggest game in the world and beats the best consistently. I also love golf, and know Ivey has been taking it up a lot more recently with danny n, betting 100,000 times more than I probably do, pretty baallin...check out this link to show how amazing his instincts are...I dont know any other player that could make these plays so late in a tourney other than Ivey, not even gus...
http://youtube.com/watch?v=LEfLXr3eSxs
Also like Daniel N and Gus as well for similar reasons. They are the new generation of poker.