Can't speak to the CG-R on comfort, but most Specialized seat posts have the same clamp these days, including my Allez Sprint (shared with the 1st gen Venge), and you have to tighten the F* out of it to keep the saddle from tilting. I have an adjustable torque wrench and I had to put 12nm into it before it would stay in place. Was a little disconcerting as I have a carbon railed Brooks and I was really worried about damaging the rails.