So far, I've only listened through my crappy, in the ear bud earphones. I'll probably give it a listen in my home studio (Adams A7x monitors, Beyerdynamic DT880 Pro headphones, AT MTH-50X headphones). On my POS earbuds the guitars sounded HUGE. Whoever mixed it obviously loves electric guitars. I MIGHT have some feedback regarding the vocals in the mix, but I can't say anything given that I've only listened once with ear buds. Getting a mix to translate to multiple listening environments across a buch of different devices is a MAJOR pain the ass!!
ETA......My son is a huge metal fan. I'll give it to him for a listen when I get home.