OK, when discussing piano sound, I have to give my 2cents about it.

First, my brother owns PSR740. The piano sounds OK. When I played PSR2000PRO at the dealer (and mind you, also motif sounded the same as PSR2000PRO... at least to my ears), it sounded like the piano on PSR740!!! I do not know, I do like the piano sound, but there is something I do not like about it.

But sounds are opinion. I was recording for my sister on SK880 and I thought it had better piano than PSR740 and then I switched to PSR740, and she said, "Now this is the piano."

I do not understand why Yamaha would not place the sound of P80 on PSR2000pro or motif? Could it be that they played the demo on P80? (I did not hear the demo, why would I?)