Best FIGHTER at each weight class of all time.

So I'm just now watch this Bruce Lee Martial Arts Documentary and I truly feel he's the best 135 pound FIGHTER of all time. I wanna educate myself of...

Source: http://www.mmaforum.com/general-mma-discussion/100478-best-fighter-each-weight-class-all-time.html

Vitor Belfort  Robert Berry David Bielkheden Michael Bisping