I had the S2 concepts rear seat seat cowl. Just recently swapped it for Pyramids version. In terms of quality, it's MUCH better! The S2 wasn't color matched, (it's just a glossy white but the red color does match). The finish was also pretty bad. The top of the cowl has visible swirl marks scratched into the clear coat. The only thing I like better about the S2 is the rear of the cowl actually wraps around the back of the seat. The Pyramid leaves a small amount of the bottom of the seat visible in the rear. However, you can barely notice it, and the Pyramid actually covers the side of seat, just like the oem one, which the S2 does not. Overall I'm very happy with the new seat cowl!