Some of the bands suggested are s***.
Don't bother with The Devil Wears Prada or Bring the Horizon unless you want crappy non-metal scene lyrics. Suicide Silence just sucks.
Actually good metal bands (including deathcore that doesn't suck):
Job for a Cowboy
Whitechapel
Sumatra
Knights of the Abyss
Winds of Plague
A Thousand Years Slavery
All Shall Perish (The best deathcore I've ever heard)
As Blood Runs Black
Aeon
Arsis
The Faceless
Miseration
Benighted
Brain Drill
Mygrain
Neaera
Cryptopsy
Cynic
Devildriver
Divine Heresy
Five Finger Death Punch
Heaven Shall Burn
The list goes on and on.
