Originally Posted by GK Growl
I'm confused. I assumed I would have to go larger for better performance. Maybe I just like a lighter B string. Anyone else have similar B string experiences?
Yours is a common misconception. Very common.
Lighter-gauge strings actually tend to be more resonant. They vibrate more freely, thus producing a harmonically richer tone - especially roundcore strings. So long as the degree of tension is acceptable and the signal strong enough (easily enhanced with active electronics), it's all good.
Two of my five-string basses wear light-gauge DRs - a set of Fat Beams and a set of Lo-Riders - each with a .120 gauge "B" string, which is nicely articulate for my purposes. I don't downtune, and I play with a reasonably consistent light touch.
All my other five-strings have .125 gauge medium "B" strings, and I like them fine for those
applications. But I have no need to go to a heavier gauge than that.