My CVP509 was delivered last week. Every arranger keyboard I've owned up to now always made me wish for a more realistic piano voice. Not anymore. Fantastic piano sound - I often forget I'm not playing a real piano. Plus the finest Yamaha sounds are all here, too...including those delicious SA2 woodwind and brass voices, along with a ton of new "Natural" voices. All this through a tri-amped 16 speaker sound system, string resonance and iAFC. It's truly a joy and pleasure getting lost in the music.