I've never heard of the FitMiss preworkout, but hey if it works for you that's all that matters in the end! It's probably very similar to the other preworkouts on the market like you said, just with some different branding. I hear good things about the ON preworkout though, haven't tried it yet but I probably will once I finish this tub of GFuel. Here's a photo of the supplement facts provided on the tubs/packs in case you want to take a look before you go and buy anything. That is for the green apple flavor but the ingredients are the same with the exception of the flavoring/color. I'd recommend checking out some flavors by getting the 3 packs before you buy a tub of anything. There are a bunch of different flavors but I'm not a fan of them all and I'm stuck with a whole thing of blood orange flavor that I dislike, lol.