The SP6 has a very nice action, IMO. It is better than my old PC2x, and seems reminiscent of a Fatar Studiologic piano controller keyboard I had years ago. You can set the Hammond organs to play at the high point in the keys while keeping the pianos at the low or regular point. The piano sounds are outstanding. Very rich and detailed. To me, with a few more sounds, this is an all-around good gig board, and one that might do in a pinch when only one board is desired and good piano action is a necessity. I had been gigging with a Hammond SK1-73 which of course had killer B3, and some decent to passable other sounds, but piano was always a little compromised. I will still keep that board, but it may end up as a top board, with the Kurzweil SP6 underneath for piano duties and strings/layers.