I happen to like all three, as someone said above they all have their own personalities.

Original Leatherface- Not just a killer but also seem to care...in his own sort of way. Definetly not as brutal as the new leatherface but that's what made him such an interesting character.

Choptop- Bill Moseley (spl?) is a good actor in horrible and he plays this character to perfection. Definetly one of the craziest characters ever in a horror movie.

New Leatherface- Unlike the old this Leatherface didn't have many feelings, he was just a trained killing machine...I kind of liked this change though. It added a whole new attitude to the character which made the movie more interesting.

all of them

Hansen--best there is, best there was, and the best there ever will be.