I went with a wide cut barrel channel even though I have a Tikka factory sporter barrel. I'd probably do the same again just for options.
I have the Tikka bottom metal. I swap this stock between a 6.5PRC, 223, and 22lr. At least for the 22lr, I don't think I could do that with anything but the Tikka bottom metal.
I went for all of the fancy options. If I were doing it over I might forego the molded in color. It looks good, but it's an extra cost and 2-3oz extra in weight. I have a buddy who got the painted camo option and it looks great.
Overall I'm very happy with it. I haven't shot the Rokstock, but with many of the same defining features I can definitely feel the reduction in recoil.