Racer Tech springs??

I’m looking to upgrade from the factory coils on my 900s. I was just wondering if anyone on here has any first hand experience with the Racer Tech dual rate spring kit. The kit is pretty pricey but just wondering if it is worth it with a noticeable difference in ride quality or not. Or if there might be suggestions on a better setup out there Ive overlooked possibly. Trying to decide whether to keep the shocks and go with better springs or just go all out and buy a complete new set of shocks to improve the ride quality. Any input appreciated. Thanks.