Loving it!
I was riding a Terry Race Liberator for about 15 years. Switched to Power Arc 3 months ago and love it.
I tried a Fisik and Fabric and neither was close to comfortable.
My Terry’s was 147 and my Spec is 155.
It sets up different because of the shape. It took about 4 hours in the saddle to get the fore/aft where I like it.
I could really feel my sit bones taking the weight and all the soft tissue is floating along.
I did the Ti rails because $70 to move up to the CF rails didn’t seem like a good expense for me.
I never did move much, but I find that I can slide back about 2 mm and still be comfortable. When I’m in the drops I feel like the saddle wings give me more area to push off from for more power.
Once you get it dialed in, it will cradle your butt like no other saddle!