I was at this show also and thought it was great. Really enjoyed Kyng but VoM wasn't my cup of tea.
I went specifically to see Trivium and they were fantastic. My only complaint was that the set was too short. They announced that they would be back in April with a new & longer setlist, so I guess I should have waited for them to come as a true headliner (when this show was announced locally it was billed as a co-headlining show between Trivium and In Flames, but that wasn't the case).
I really enjoyed In Flames as well, much to my surprise. I'd never seen them live, and their albums don't do it for me. I found the live versions heavier and more up my alley.