Somewhere in PR, Tito Sr. & Tito Jr. are proud. Abner has used the "puerto rican uppercut" to perfection.
Mexican's have their Low-Blow King. Mares low-blows are more apparent and blatant than any of those PR fighters. I don't remember any of them throwing 30 or more low blows in a fight and getting away with it!
I prefer the MXLH though. It leaves a more lasting impression. It'll have you pissing blood for days.