I think the peak of my spice-to-enjoyment ratio might be Serrano peppers. I sliced up some to put on chicken and it definitely had some heat. I required milk with the meal to not be overtaken by the burn. I think hotter peppers are delicious, but I’d say I’m only above average spice tolerance. i pretty much add something spicy or order spicy for most lunch and dinner meals, sometimes add some hot sauce for eggs for breakfast, too. Usually order on the higher end of spice at chain restaurants at least (a medium spice level at a Thai restaurant was at my limit though). My favorite salsa has (trace probably) amounts of scorpion and ghost peppers in it. I’ve had straight up ghost pepper salsa before and it was rough. Never have and never will do a reaper challenge....I’ve seen the outcomes of some of those and I think I know my limits.