You have to expand the RD to get it to sound decent; the stock pianos are not very good at all. Even the SRX piano didn't impress me that much; the soft samples sounded good, but the louder, forte samples didn't seem to have good sustain to me. To me they fade away rather abruptly. And as uD said, expanding the RD will not make it any more synthelike as far as editting goes.