Efren - Because he's the best, and is respectful of the game while achieving that.
(Honorable Mention)
Johnny Archer - I spent some time thinking about players and kept coming back to him. While Johnny wouldn't have made my list back in the day, I've come to respect him in the last few years. I've met him several times this past year, and I absolutely love his focus. You can see it in his eyes. He seems more relaxed at the table these days as age has begun to catch up with him, yet he has this amazing focus when he's anywhere near a pool table.