I have three that I use all the time. Sriracha, Pinata hot sauce, and Mi Madre Pique.

Pinata hot sauce and Mi Madre Pique aren't that well known, but they are great and reasonably priced. I met the owner of Pinata when he was vending at a concert and then ordered online. Mi Madre Pique I discovered on a trip to Puerto Rico and I've ordered it online ever since.