To put it bluntly, the Hollywood touch. And the Orchestrator. Actually, EastWest got dedicated assistance from some pretty famous software engineers turning their Play player into Opus, and it’s a magnum opus at that, pun intended. Don’t like ProjectSAM myself but I do love BBCSO (Pro) as well as Opus. BBCSO for more classical-style and Opus for big and Hollywood (although it’s perfectly capable to bring soft and sweet too).