I have to admit, I didn't like the taste of the only habanero I ever got fruit off. It had a sour, pungent off-note that I didn't find pleasing. Hot and stinky.
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My faves today are Guajillo, Santa Fe, Alma, Italian Pepperoncini, ... ripe and sweet! and Jalapeno gotta have it. The hotter peppers like Piment D'Esplette and Bulgarian Carrot, I like them but I always end up with too many and not enough sweet peppers.
Sometimes my favourite is whichever pepper I didn't grow last year and then I miss it.