I'm a Sram fanboy because I love their shifters...the ergonomics are better and I prefer the clunk. I also like the adjustability on the X0 shifters however their clutch mechs are rubbish.
I've since moved back to Shimano and am putting up with their horrible shifters for a better clutch system that is quieter. My a Saint shifter seems to have massive levers and is pretty plasticky compared to the X0 mech that it replaced. The Zee mech on the other bikes feels pretty nasty, but it was cheap.
I always use XT cassettes though...cheap and seem to last well. I don't touch Shimano chains though....rubbish.
Shimano brakes seem better and their cranks are better lookng too (although I always but Race Face now Shimano ones seem so expensive).
