hey! I've played on all three and let me tell you the sample on the Kurz is terrible. The P80 is nice. However the P-50 IMHO has a better sample. Play the upper register of the p-50 and you can hear the sypathetic resonance of the OTHER strings. It is BAD ASS! PLus the P50 is Multi Timbral. (great as a midi controller) http://www.harmony-central.com/Synth/Data/Technics/SX-P50-01.html

Try this link