Very happy with my 3 inch old man springs. Customer service is good to. I had one of their springs come apart during shipping, the centering pin came loose. Called them up and told them what happened, week later two new pins arrived. Called them again to tell them I was also missing a few of the rubber spring isolators between the springs, no questions asked they shipped.me.the needed pieces.
I don't know about their coil springs, I'm using IRO. So far I'm happy