[TheOtherHobbes]

Kawai's midrange and higher pianos have a soundboard feature that provides tactile feedback.

I've heard the top-end models are very good. They have the same piano action as the five-figure acoustic Kawais but with electronic sound generation.

(I have a cheaper Kawai which is suits my needs, but I'm planning to get either the top end Kawai or Yamaha when my playing gets good enough to justify it.)

They're more than fine for amateurs, even dedicated amateurs. The equivalent Yamaha model - no soundboard, arguably better action - has become a kind of semi-mobile standard for professionals to practice on when there's nothing better around.

Of course you can't compare a four/low-five electronic design with a hand-made prestige six figure concert hall acoustic. But you can compare it with an equivalently-priced acoustic, and increasingly the electronic designs are winning.