The Kurzweil SP4 series hav 4 zones, good polyphony if using up to 3. I play Superstition on a setup with clavi on bottom half , a power brass (zone 2) Sax (zone 3) layered on the top half - I admit having an 88 gives a better range though the 76 is great. For the price this is awesome!!! The programming is a pain until you get used to it. Soundtower software (I don't have) helps I believe. You can have 64 of your own setups.
