Ok, so the title suggests I have some scientific theory explaining a mathematical equation. Sorry, I can't deliver you that. But I am wondering people's thoughts as to why they play the gauge they do. Light gauge = easier bends is obvious, but what about things like twang (a big deal in the Tele universe) or just desirable timbre? Oh yeah, I think we've all heard the B.B. King played 0.08's because "why work so hard?". Me personally, I always played Ernie Ball Super Slinkys (pink pack) on my Strat, but since my Tele's B5 Bigsby has return-to-tuning issues with that gauge (which is why I now play EB Regulars in a 5-string Open-G "Keef" tuning). So, EB came out with 2 new string sets: Burly and Ultra. The Ultra could easily be named "Skinny-Top & Not-quite-as-Heavy Bottom", but I guess the boys in marketing thought otherwise. I myself bought a set of the Burly because Bezos 'n Pals have them as a Prime item. I'm curious to see what the twang-o-meter reading will be!