First "real" ride on the XX1 today...all I can say is WOW! Easily the best group I've ridden.

Super smooth shifting. So nice to have close to the range of 2x10 with no front shifter.

I have mine on my Tranny now. I'm planning on building a new full suspension bike next year and it will most certainly have XX1 on it.

The only thing I could say bad about it was in the 32x10 combo I could have used it little more speed on smooth downhills. Not a ton...I think for buff downhills I'd be happy with the 34 on the front. 36 tops.