The CS-80V sounds very good. The envelopes are snappy; the oscillators and filters sound like hardware to my ears. That it responds to polyphonic aftertouch is major. I don't yet have a keyboard that generates it, so I sequenced a 3-note chord and simply drew in poly AT swelling in and out for each note at different times. Having vibrato and volume under polyphonic control is a thing of beauty. In this regard, the CS-80V is about the most responsive and expressive synth I have played. And the interface is a work of art.