i run an SRAM 9 speed chain on a BioPace chainring, it's never fallen off, or broken. it's the quietest ive ever heard my drivetrain. 1/8 chains stay straight, so if you have a bad chainline the chainring is obviously going to jump off. and a 9 speed chain is built for strength too, multi speed chains break more often cause of shifting, so they build them really strong. and if used on a single speed they work great and are quieter than cheap bmx chains. non of us are grinding so there's no need for bmx chains