Originally Posted by
Kapusta
Yes, Octal-ink (splined) held up MUCH better than ISIS. In my experience, they work as well as square tapers. Maybe ST does last longer, but honestly they both last long enough that it is a non-issue IMO. I have many years of use on one set of Octalinks on both Road bikes and MTBs.
Depends on the unit. There were some that lasted amazingly well AKA decades.....
And on the other end of the spectrum, units like Campagnolo's AC-H, that would feel like gravel in no time on even a fair-weather-only bike.