I was going through this one in my head and trying to think which division has stiffer competition
I'm sure I will miss some big names these are just the names that popped into my head.

Welters:
PBF
Hatton
Margarito
Judah
Gatti
Collazo
Baldomir

Super Feathers:
MAB
Manny Pacquiao
Erik Morales
Rocky Juarez
Alex Arthur
Jorge Barrios
Vicente Mosquera

IMO these two divisions have the most talent right now...Please correct me if I'm wrong

Welters: 2 Super Feathers: 3