I have been told that the keybed is still very ordinary, short keys and short throw. VERY synthy.
But feel is so subjective. What I don't understand is how some who profess to be such great keysmen, can actually put up with such crappy keybed actions...
Even the Audya, at $9000 (out here) has a keybed that is more "plasticky" than the SD1. At that price I would expect at least something like the G70/Pa2xpro keybeds.
The S910 (retailing here for around $3400), I have been told has a worse keybed than the PA800, and that even a couple of Casios are better too. Personally I cannot say, as I have not played one, but I have played the PA800 and to me its pretty ordinary.
So for me no matter HOW good it sounded, if the feel is wrong, the whole keyboard is wrong.