Originally posted by miamijim
Werent you asking about rear cogs? I was wondering why my bike didnt seem to shifting quite right. Then I found out it has an Sram crap cogset. Never put Ford wheels on Chevy. New drivetrains are designed to work as a unit. Mixing and matching parts, with the exception of maybe the chain, will only diminish driveline effiecency.
In other words, Shimano shifters and derailleurs should have a Shimano cassette.
In my experience SRAM cassettes work fine with Shimano derailleurs, and are frequently specced on MTB's in the UK. As SRAM 'cogsets' are the same spacing as Shimano, and use similar ramping you shouldn't get any problems.