5'7" 180lbs, I had a 2010 C-X and now have a 2011 C-X, both 157.
I really like it, but it can be a bit unforgiving in bumped-up or thicker snow. I've ridden quite a bit of powder on them . . . after some experimentation, I found that setting the rear binding all the way back and setting the front to get the stance width I want is the best for riding powder.