Pretty straightforward, I decided to exclude The Glass Prison because I strongly suspect it would be a runaway leader again (
https://www.dreamtheaterforums.org/boards/index.php?topic=40528.35).
I went with TROA, as it's one of my favorite DT album openers. JLB comes out of the gates slaying, with one of his best performances and most rocking timbre ever. "Driven blindly by our sins" is the pivotal moment of the song, but the subsequent "I can feel my body breaking" part comes out a hell of a lot better than it did in TDS, both vocally and instrumentally.
I'll also have to commend JP on his overtone-y, more natural, hard rock sounding tone, coupled with MP's more classical drum sound approach (kick drum almost stripped of that click-y attack that was always typical before and since). The whole production of Octavarium was a nice change of pace and it would be a breath of fresh air to hear something like that again.
Also gotta mention what a kickass live moment that was when this song kicked off their show in RCMH (Score), with that overwhelming, sweeping energy. RAAARRRRGGHHH