Good review, but I'm really worried for tonight. I've seen Testament twice, and once had pretty good sound, and the other time had literally the worst sound of any band I've ever seen. Like you said, songs I know inside out were completely unrecognizable and I'm worried that will be the case again. With that said, the second time I saw them was actually the time they sounded better, so I think it's pretty hit and miss.
It's great to see Trial By Fire (I thought they dropped that at some point?) and all of the new songs back in the set. Even though Overkill have supposedly canceled the rest of the tour, I'm still excited for tonight. It sucks, but at least I'll get to see two killer thrash bands!