I like Mrs. Renfro's sauces, too. There is a jar of the ghost pepper sauce in my kitchen cabinet right now. She has a green sauce without tomato in it that is just jalapeño sauce that seemed hotter to me than the ghost pepper, but it has less flavor. There was a tequila sauce that I tried recently, but it didn't seem to be anything special. My plan is to get some AM Crunch Wraps from Taco Bell and to add Mrs. Renfro's ghost pepper sauce to them.
At Buffalo Wild Wings today I tried a sauce they call Blazin that has been changed to include ghost peppers. It was actually spicy. I think it was another one with extract for the heat, though. It isn't something I would buy by the bottle.