To my inexperienced ears, the Super Quartet pianos were almost "clink-klonk", $5 a dozen, compared to the Orchestral one. But there was only one piano in Orchestral.
A friend of mine, a piano player, (hers is the "real" upright piano I mention in my previous post), heard an mp3 of a midi file I had (St James Infirmary) done with the Orchestral piano, and wet herself.
But the guitars on Super Quartet...ahh those guitars....they were AWESOME.