IMHO, the best synth/arranger of its day was the Yamaha 9000Pro. When it was introduced (pre-Motif),it was the most capabile synth in Yamaha's lineup. It had 48MB ROM, large for the time, and plug-in slots for additional synth technologiesso it could do VA, PM, as well as Rompler stuff. It could sample and included vocal harmony. The build quality was high. It was a no-compromise instrument, so I guess it did not sell very well.