I had a V-Star. Went to a forum to learn about octane. Some riders using super some using premium and some regular gas. Like the oil thread here that forum went on and on and on and on. After all that crap my conclusion was just use the octane the dang manual tells you to. Simple enough.
We use premium in all our vehicles (not sure how "super" is different), regardless of the manual. One exception - use ethanol free in the zero turn - probably should do the same with bikes.