Just an update on the wear factor of Chain (KMC E11T NPNP ) and Cassette (Shimano's SLX M7000, 11-Speed, 11-46T ) . These both came standard with my Vitus ESommet VR back in January 2019. Since then I've be riding the set-up really hard, big jumps, drops, and climbs etc.... About the end of December 2019 chain started skipping at the back cassette slightly only rode a couple of times since 2020 but the chain was totally stretched out beyond any limit on my gauge but never broke.... the cassette was also worn out especially in the low end chainrings hence eventually the worst chronic chain skipping ever, just tried it to see how long they'd last. Replaced them both same as originals and all is good again, front chairing is fine remarkably. Anyone got any options they have tried that may be cheaper.?