I think you can learn a lot from various Players - my fav 3 are Tom Dwan, Phil Ivey and obviously DNegs. I also do like Patrick Antonius!
Phil & Daniel have Incredible reads on their opponents, their metagame is on a completely different Level, it's like they are not only playing with the Cards, but taking in all the scenary around them. Nevertheless, both have a different Approach as to how they Play. Daniel likes to be prepared and set his "personal" Limits beforehands (which
hands do I call / raise / re-raise preflop? which Hands do I fold?), meanwhile Phil is a much more chill guy who prefers to Play without preset personal limits and to decide how to Play from Moment to Moment.
Tom's style is unique as well - I like what he said during one live game - "from folding you don't win any Money". Of Course, this is risky and obviously he's lost some games. But i think you Need also to take the Risk sometimes and let your opponents now that they should be scared of you, regardless if the flop Comes AKQ or 27Q.