The Casio Privia series has been so poplar, and now their latest versions have come along.
At the top of the line is Casio Privia PX-850 which is a digital piano that has that Casio sound which I have tried to describe in these various reviews.
I feel the Casios have a really good sampling instrument.
You can find the Casio Privia PX 850 on Amazon here.
The grand piano sound it produces is rich and has very good overtones, from its lows to mids and highs, and I would go so far to say that the highs especially, the octaves above C above middle C sound like they have a full compliment of overtones, which means they sound real.
Here’s a couple of videos showing the sound of the Casio Privia PX 850:
And this simple song, which really does show the extent of the realism of the sound from this Casio PX 850 piano.
The sound is the most important thing.