Metallica was an easy choice
Dark Angel by miles, I’d rather listen to them any day
Kreator vsNuclear Assault was tough. I want to say I like Nuclear Assault more, but then Kreator has songs that actually stick in my head, more memorable. For that reason I barely chose Kreator almost didn’t vote
Exodus vs Voivod this was tough as well but personal preference goes to Voivod
Megadeth vs Mekong Delta I mean, I don’t want to be that guy and start a flame war around here. And yet, Mekong delta is more my taste often these days. More progressive and incorporates interesting classical music. I’ve liked Megadeth for a longer amount of time and they were more influential, so I went with them
Overkill vs Razor. Shrug? I have no idea here but I remembered some annoyance when I saw Overkill live, and so went with razor
Slayer vs Coroner. I prefer Slayer, not that I listen to them much anymore, but in the past I listened to them more than Coroner
Testament vs Sepultura very close based on their older material. Slight edge to Testament. Based on newer material testament is better, so they win