Heaviest / most brutal vocals to you?

By heavy / brutal I mean in the opposite direction of, for example Judas Priest or Iron Maiden,

but still being understandable.

It can be in a specific period of a band / solo album/ any band or all around

Some of my candidates are:

1.)Nile -Dallas Toler-Wade

2.) Max Cavalera with Sepultura, in the Arise - Chaos Ad era

3.) Napalm death - (Mark -Barney- Greenway), probably not in the beginnings, that really required reading the lyrics for me

4.) Entombed - Lars Göran Petrov -

5.)Arch Enemys former singer Johan Liva

6.)Cannibal Corpse - George Fisher (kinda understandable vocals)

7.)Job for a Cowboy - Johnny Davy, probable can't figure most of the lyrics but this guy sounds heavy to me and still sounding human :) .

8.)Krisiun - Alex Kamargo

9.)Opeth - Mikael Åkerfeldt (Obviously the heavier parts not the more melodical parts)

Cya

Glen Benton

Justin Bieber

Demaryth, how could I have forgotten about that one .

Just to add a few more:

-Johan Hegg from Amon Amarth

-Corey Taylor with Slipknot, always was amazed how fast the guy sang in all the fast Slipknots tunes.