This shit right here.
Tried it at a firehouse subs. They keep a lot of hot sauces at the counter for people to use. I never used any and asked for a suggestion, and they recommended it. The manager said this is the only sauce he has to order by the case and not the bottle.
I've bought three since, I could drink this shit.
It's a stronger vinegar taste, with a nice heat that gets stronger the more you use, but not overwhelming.
I highly recommend.