Howdy
When I first started shooting Black Powder in my replica Colt Navy in 1968 I was buying Goex, just like everybody else did. I could be wrong, but I don't recall there being any other choices. Apparently I was buying FFFg. Catch the price on the can on the right. I bought a few cans from a friend who had bought it quite a long time earlier.
Fast forward about about 30 years later, right up until today and most of my BP loading is in cartridges. 45 Colt, 45 Schofield, 44-40, 44 Russian, 38-40, 45-70, and 12 gauge shotgun.
At the time I was using Elephant and Goex. I was using FFFg in the pistol cartridges, and FFg in 45-70 and 12 gauge. All other things being equal, you will see between 60 -100fps more velocity using FFFg instead of FFg. I eventually decided to just keep one granulation on hand, to make things easier, so now I load FFg in everything. I don't sweat the slight loss in velocity.
Elephant is not made any more.
For the last ten years or so I have been using Schuetzen FFg for everything. If you cannot read the fine print on the bottle, Schuetzen is manufactured in Germany by WANO Schwarzpulver GanbH (Schwarzpulver translates from German as blackpowder.)
Yes, many folks think Swiss is the best. One reason is Swiss uses a better grade of charcoal, made from buckthorn alder. As far as I know, Goex still uses charcoal made from willow. I'm pretty sure Schuetzen also uses the same buckthorn alder charcoal that Swiss uses. In my experience, because of the superior charcoal, Schuetzen leaves less fouling behind than Goex. That is why I changed from Goex to Schuetzen. I have not bought any for a while, but in my experience Schuetzen was only slightly more expensive than Goex. A friend and I would split 25 pounds from Maine Powder House every year or two when we needed more powder. You go through a lot of Black Powder if you do much shooting.
I have never bought any Swiss because I simply did not want to pay that much, and Schuetzen worked fine for me. Same with Old E.