I like heat in my food. Every so often, I try to ramp up. A year ago, I tried my first habanero pepper. Boy, did that set a standard! Forget jalapenos and so on. Then, as I read further about hot peppers, I came across references to ghost pepper. Habaneros are hot; we grew some habaneros in our garden this past year. As you parse them into dishes in a sensible manner, you get heat and they also support flavor.