I went to this show as well, and I share many similar sentiments. It was pretty damn awesome. I saw In Flames headlining back in January and thought they were really weak, but this time around they were waaaaayyy better and had a lot more energy. Getting to hear Embody the Invisible felt really good. Oh, and Lamb of God put on a great show as always. When they were playing The Undertow, during the middle of the song Randy shouted out "Negative Approach!" out of nowhere. Not sure what the point of that was, but I got a good chuckle out of it.
Oh, and Chad Gray is good at faking a southern accent.
12/27 The Black Dahlia Murder
1/14 Shai Hulud (?)
2/22 Comeback Kid