Like diggler said, the only real difference is the finish. You won't get any better accuracy out of either one, I think you can get both with the x-mark trigger now. I bought a sps in 270 Win for my wife about four years ago (pre x-mark trigger) and have done nothing but adjust the trigger down a bit and shoot it. It seems to shoot just about anything we feed it into around 1 to 1 1/2 moa, better with my hand loads.