Obviously this is highly subjective, so good luck coming to any sort of agreement. That being said, most MMA fans will tell you its one of these four men.
The guy looks like a used car salesman. He's a bit soft around the midsection. His only known facial expression is a strange little smile. He's also an unbelievably dangerous fighter. His punches are lightning fast and very powerful. He has excellent trips, and more than half his wins come via submission. He never gets tired, is never apprehensive, and is never scared. He is Russian. He is called The Last Emperor.
His next opponent is likely going to be Fabricio Werdum.
Georges "Rush" St Pierre
GSP is one of the poster boys of the UFC. He is known for his good manners, his constant improvement and his adorable French-Canadian accent. He has cut a swath through the WW division and shows no signs of slowing down. His strength, speed and general athleticism is unmatched. Possibly the best wrestler in MMA , he combines this with excellent submissions and a daring striking game that includes leaping punches and spinning kicks galore.
He is scheduled to fight Dan Hardy on March 27 at UFC 111.
Anderson "The Spider" Silva
Middle Weight (185lbs)
This Brazillian fighter has recently been accused of being boring. UFC management then decided to give him an opponent who was actually willing to exchange punches with Silva. This has been shown to be detrimental to one's health, and indeed resulted in one of the most one-sided losses UFC fans have ever seen. Oh, this was against a former champ, who was a weight class above him. Silva is undefeated in his UFC career; his Muay Thai and boxing make him the most feared striker in MMA today. His hobbies include hilarious impersonations, dancing, and challenging Roy Jones Jr to boxing matches.
He is schedulded to fight Vitor Belfort on April 10th at UFC 112.
A fighter with the nickname "The Prodigy" had better be good. And oh, oh he is. His boxing is some of the best in the sport, his takedown defense is unreal, and his ground-game is incredible. He has abnormal flexibility, especially in his legs, he is almost impossible to cut and his chin is so strong that he's never even been knocked down in a fight. To learn more, go to bjpenn.com
He is schedulded to fight Frank Edgar on April 10th at UFC 112.