Statistics etc will be at play here as usual. There will be categories - as in the ones that love their digital piano and completely satisfied, plus all the other categories. I'm in the love their digital piano and completely satisfied group.
But on the other hand, my high jumps bar is set fairly low, as in even if I just had a supermarket bought piano for playing music with, then I would be absolutely happy with that as well, even if I had no other instruments to tinker on from here on.
So - when I have the privilege and luck of encountering something like the P-515 - and when I play it, it is to me the equivalent of visiting music paradise. And this isn't working or affiliated with Yamaha. It is as if they made this piano just for me - which, of course they did not. Although, this goes back to what Pete once accurately said. Yamaha messed up along the line by way of under-charging customers. The price that is. So the team behind that is most likely no longer working there heheh. But at the same time - it gets this special and amazing 'weapon' out to the masses to enjoy. People paying for and acquiring something that is actually priceless.
When we're lucky enough to be able to have an instrument that allows us to express ourselves musically, and make unlimited musical statements with, then that is indeed priceless.
According to me - anyone that also has the luck of thoroughly enjoying their music instrument(s) -- that condition is priceless for sure.
I'm only starting to learn some erhu - and find that it does some amazing - ok interesting things. I'll do a recording of something interesting it can do. One is a particular animal sound - and no - it's not horse, mouse, elephant, bird, cricket, insect, donkey.
Maybe it can be done on violin too, but have never heard it done ever on violin. I will get around to recording the interesting thing -- maybe today. The erhu's bow string music capabilities and controlled pitch bending capabilities is something extra that I want to know how to do - or have access to. I didn't want to go the violin route, as I don't want to have the audio source wall-to-wall with my ear, or something pushed/jammed up against my chin or neck etc.