That's really good info for my application. Good to hear that you liked them with piezos and the bass I'm thinking of trying tapes on is a 32" scale.Ditto all the data on the copper whites. I used them on my Rob Allen fretless (piezo) for a couple years and more recently on my Muckekroy 5 string. They DON’T trigger some of my pedals as well as flatwounds, but I love them for balance between thud and note clarity when I’m not bringing the pedal board. I also like the black labella tapes too, for more thud. Haven’t tried other brands, though!