KMC. Far less chain snapping than SRAM.
The ‘wear’ is much the same with any chain but with KMC you can run it to destruction and it won’t fall apart early. Yes it’s two fingers up to Park Tools and their backhander they must get from chain companies for producing their chain checker 😉 , but I go on the basis that replacing chains three times by changing them early when they are still perfectly good, doesn’t “save” the cassette. It lasts just as long in my experience over three chains as running one chain to death. The reason for the early change of chain really is because cassettes mesh with the current wear of chain but are less happy with new ones. Let it run and it won’t work with new ones any more, but it’s still perfectly fine with the old chain. If the old chain isn’t dead, why change it?
That’s my current experimental theory anyway, and so far it’s working. A year on the current cassette and chain and seems fine. Not snapped chain. KMC.
Ps. Add to the mix… Squirt lube. Constantly shiny chain, possibly less grinding grit damage.
