I seem to experience less slippage with this belt, as have used them on two Bonnies. Even during a flood earlier this year, when others in the neighborhood had cars jumping belts in the deep water, my gators stayed on. Not good, I know, but I got trapped and had no choice.
Yet, even though they are touted as the "quiet belt", they whine like a son of a gun. Sounds like a muffled blower or quick change rear-end. Cool to some, but annoying to me.
I guess if I just installed a cat back or just swapped out for flowmasters, I wouldn't be able to hear it, eh?