Way back since Vida's research we've known that the 7 methyl alteration was superior no matter if it was to testosterone or nor-testosterone. This isn't just a metabolic thing, but it seems to be from the way in which it activates the AR itself.
The guys at Purity Solutions were selling Trestolone powder way before they started the whole Pure Oils thing. Personally I don't admit to anything, but my dog and his chemist knows that they had good Trest, yet I can't account for everything.