Benson Henderson is ridiculously good looking. The UFC has a bunch of handsome guys on the roster (a few examples below,) but Bendo's face would make Michelangelo burst into tears.
Pettis would be good looking if he wasn't Jersey Shore orange.
Erick silva, Machida, Gustaffson, Bones, Shields, ellenberger and GSP are all quite presentable, considering they get punched in the face for a living.
Slightly off topic, but young Stephan Bonnar (TUF 1 era) was quite a dish.