I know for a fact that I can shoot more times between having to run a patch down the bore of my .32 Crockett squirrel rifle when using Swiss when compared to the old GOEX. I have not tried the new GOEX.Fortunately GOEX is back...unless someone is doing Olympic-type shooting, I don't think any normal human can detect any difference, all things being equal; although I know there are some here who will claim otherwise!
I find no difference in accuracy between the two.