Epsilon Zero took the 2011 Phantom Breaker themes and gave them a full modern remaster that actually improves on the originals. "Let It All Burn" (both English and Japanese versions) opens with vocal tracks that feel like anime opening credits you'd never skip.
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The character themes all got reworked. "Catharsis Of The Fist" punches even harder with cleaner production, and "Schrodinger's Cat" gained new layers of synth complexity. "Transcending Worlds -Gate Of Steiner-" is a Steins;Gate crossover nod that Abo fans will lose it over.
"War God -Ikusagami-" goes full orchestral drama. 34 tracks of polished anime fighter energy. If you bounced off the original's limited edition soundtrack, Omnia is the definitive version.