Had the chance to check out the groupo at the bike shop yesterday. Some impressions:
- It is freakishly light.
-Pricewise, it's only a bit more expensive than a complete XTR or X0 set.
-The chain really likes to stick to the chainring
-That and the new rear mech with the type-2 clutch and the parallelogram design seem pretty solid.
For WMAC: the new rear mech separates the horizontal and vertical planes of movement. The normal derailleurs move diagonally, and any vertical shock induces not only chain slap but a horizontal component in the movement.
Oh and the cassette is a thing of beauty. That is my only concern here...the duration of the cassette. It goes at 430$ a pop here.