When the Rule and Bully came out, this was brought up since Goo and M80 were both brand new, very strong solid reactives. I remember one of the Track guys coming on here and saying that BASF showed them a few new, different resins. Track chose one they called Goo and Columbia chose one they called M80. Clearly they belong to the same technology generation, just as Superflex, Powerplus, Accu-tread, and PK18 do. But Goo and M80 were different, each company has different formulas.
SH