i currently have to say lebron james. his speed is just uncanny for his big size. he is not the smoothest, but he gets through the cracks like a mad truck and always goes up with authority - whether he finishes or not. maybe it has to do a lot with youth and young legs, as well as a body fit to subject to punishes like a young a.i. then i would say wade, followed by kobe. i think kobe mishandles too much down there.