As random album pairings go, this is actually an interesting one for me, because these are my favorite DT albums from their respective decades.
Train of Thought gets my pick. I don't think the album has a weak moment. It's just relentlessly awesome from the last note of Losing Time/Grand Finale to the first of The Root of All Evil. I don't mind the shredding on songs like This Dying Soul; I actually would like to hear modern DT do a little bit more of that. I don't mind the Canadian rapping on TDS and Honor Thy Father; I think it's a bit of a weird choice presented in a vacuum, but it fits the songs. And I think, paradoxically for their "heavy album," it has one of their strongest bodies of melodies. This was my first DT album, and the "I wanna feel your body breaking" chorus of TDS soaring out above the heavy riffing that precedes it was one of the first moments, maybe the first moment, when I thought, "Whoa, this band is something special."
I like ADTOE a lot, but it has some songs that I don't connect with as well as the weakest ToT songs—This is the Life and Build Me Up, Break Me Down, at least. Far From Heaven/Breaking All Illusions is a stunning pair that tops the Vacant/Stream of Consciousness pair, and includes perhaps my favorite DT song in BAI, but In the Name of God, Endless Sacrifice and This Dying Soul all might come before my third-place ADTOE song