would prefer the cheapest version and i believe it's the goat as per commentary here on CZ. I don't see so far how user friendly it is in comparison to the horse paste. I notice a cattle pure version sold likewise.
I use the goat suspension. I just put it in a little juice. I like it better than the paste and think it lasts longer. I also treat my pets with it. Just convert to the dose needed for the animal your treating.