Probably a decade ago someone on this forum mentioned The Ribman and the sauces he makes. Whilst I obviously love mixing my sauces up. I always go back to his offerings and usually have a bottle on the go, lord knows how many bottles I've ordered over the past 10 years or so.
Don't know the rules on trying to dodge swearing so I'll just say give him a google!
Can recommend some of the Psycho Juice sauces - at the hotter end but backed off enough for good flavour is the Garlic Ghost, but for something a little more extreme there are ghost, Scorpion and reaper - ghost has an extreme variety too.