Just need a robust bike for riding century+ in the weekends and the occasional off road patches. So far the parts seem strong - much stronger than the 4 cassettes I went through in 10,000km friom the altus level. If it shifts nicely it just makes it all that much more fun.I have two other bikes for commuting - both run 21 speed drive trains that I expect to wear out every now and then. But at the price who cares?