I saw them last night, and their set was as disappointing as I had imagined. Just no variety in it, they might as well have just played the same 3 songs over and over.
It seems that the kids up the front new all the words to the new songs, but were just nodding their heads during Inferno and Sins. So maybe Symphony X are just playing to this new audience.
However DGM were amazing, I picked up their latest album when I found out they were going to be supporting and I recommend you do the same.