Revolver: Who has the greatest scream in heavy music?

Revolver asked a number of musicians "which scream stands alone as the greatest out there". The Black Dahlia Murder's Trevor Strnad, Coheed and Cambria's Travis Stever, Testament's Alex Skolnick, Incendiary's Brian Audley, and more select Tom Araya, Bruce Dickinson, Chino Moreno, and others.