Re: .260 w/ 100V or Super Performance?
Well, My .02 on 100v: Its a really dirty powder, constantly cleaned that .243, brass necks were nice and black. But its a really nice powder to work near the redline. Seemed very forgiving, and never had any pressure signs, brass seemed to hold up well, too. Also, the wife seemed to enjoy more rapid-fire sessions, and it seemed to be more forgiving (ie, cooler) on the throat of a factory R700 barrel. That one lasted ~2300 rounds before we had to sell it.
Sorry, havent tried the others yet.