Lamb of God is a band that pops up everywhere on my “recommended” lists on last.fm etc. I’ve never really given them a chance, for two reasons: one is growl and the other is the preconception that anything xyzcore sucks. I’ve stopped being such a wuss and gotten into growl so now it’s heavy Lamb of god rotation on spotify.
And why shouldn’t they be one of my favorites? Downtuned harmonized guitars, killer riffs and pentatonic-based solos – precisely my taste :-)