I only grow one of those superhots every season, just to see how they compare to the others I've tried, but they don't go into my food or digestive system! Some of the milder habaneros (but still far too hot for most people) have much better flavor, and one that I grow - aji dulce - has allowed those who can't tolerate heat taste dishes with habaneros, since they are chinense peppers (the same species all the superhots and habaneros are), and has the same flavor of the best habaneros (some milder habaneros, like scotch bonnets, lack much of the sweet flavor), but is barely hot at all - about as hot as pepperoncini. I often use a chocolate habanero and aji dulce , to cut the heat in half, and all aji dulce, when making a dish for those who can't take the heat at all.
The peppers I use most are Thai Vesuvius - a 2-3" pepper, that can be used green, ripe, and dried, and the dried ones can be used in Thai, Chinese, Korean, Indian, or Mexican (in place of chile de árbol), and they have a better flavor than most of the peppers you'll find in those stores. And grinding it to a powder (outside!) makes a much better tasting cayenne pepper.
And a pepper I grow every year, that I only use fresh, is Hanoi Market - and orange-ripe pepper, around 20-40k, that has a unique flavor, like the Bulgarian Carrot, but milder. I've tried a number of other orange peppers, but none were the same, so I have to grow them, and save seeds, when I need them.
I have never been fond of hot sauce, as much as I love peppers, mainly because I'm not crazy about dousing most things with vinegar. However, other things I always keep on hand are salsa negra (Rick Bayless's version, using moritas), Nam Pla Prik (chili infused fish sauce), and Nam Prik Pao, the simplified version, with just garlic, shallots, and chili peppers, caramelized in oil. The original recipe had Thai peppers, but it was too hot to use a good amount of, so I had to experiment until I found a good variety.