Fortunately thrash ruled my life in highschool, unfortunately I'm not a massive fan of any of those albums, but I'm still down for this.
And I'll be voting the same as you for round 1.

Kreator - Pleasure to Kill
Sepultura - Arise

EDIT: Okay actually there are a few there I'm pretty stoked on.

You report one of my posts and get the mods to do the rest.

Don't.

It's whack that there'll be melodic death metal but not death metal. I'm gonna write Immolation a letter.

Testament- The New Order
Dark Angel- Time Does Not Heal

Oops! My badskies. Just updated the OP. Of course death metal will be on here.

The New Order
Time Does Not Heal

I think I'll also keep a list of the other sub-genre battles I'm coming up with, just so everyone can comment and help me revise them before they get officially posted. They'll be in a spoiler in the OP. And no, they won't be open to be officially voted on, just the current battle.

Pleasure to Kill
Bonded By Blood

And the first tentative lists for future battles are up in the OP, so feel free to check and comment. They are very open to change and all sub-genres haven't yet been included. I'll keep updates to it when I declare winners, so stay tuned.

Well now I'm really gonna write Immolation a letter.