Shimano shifters and derailleurs, SRAM chains and cassettes and crank. I have a SRAM crank for the 30mm spindle (I didn't want to mess around with adaptors), and SRAM chains and cassettes are just better.. Don't let Shimano tell you you can use SRAM chains and cassettes, and the SRAM stuff is still better than Shimano even now that Shimano has master links.