I am looking for my very first piano to learn to play. I have only played a very little bit when I was a kid, and it was with a cheap acoustic upright piano at home. I'm not going to play professionally, but I love piano and good quality music, and wouldn't enjoy creating some obviously low quality sound. I'd like to buy a digital piano, due to all its advantages.
Having read Why digital piano has more polyphony voices than there are keys on the keyboard? and understood why a high number polyphony may be required, I have however a practical question: How much polyphony is needed for classical piano music, without any special electronic effects (even without metronome)?
I can imagine that the maximum polyphony "consumption" will probably come from some fast Liszt-like piece played in four hands? But still there will be just one sustain pedal used.
Is there any number, at which one can say that more is only marginally better (again, without additional effects, which are countless)?