I run the sprockets fro Rocky Mtn....
all of the time, nothing fancy, just standard steel sprockets. That's all I've ever bought for my 2009 and 1990, last one (16 tooth on my 2009) got 16K out of it, Didn't flip it just replaced it when it started "hooking" and the rear was worn anyways. I always replace them in sets with a new chain.
No, I don't know where that road goes, let's find out!