shadow XTR mech with carbon cage.
dunno about 10 speed - I am opposing it as I want my components to be changeable (I am totally 9 speed) .... but in practise having 1 bike 10 speed isn't going to matter. If you do the sums, the 2 ring/10 speed set up leaves you with a smaller range if gears and since I am pushing on a buit in years, that was one reason I resisted .... but what I've been told is that you just change your riding style to cope (the loss of the high gears does not botther me as I am not some mad max downhiller so hardly ever use the big outer ring off road).
and what is wrong with SRAM - the shifters, not the grip shift. It shifts as well as shimano.