I use hot sauce only a fraction of what I once did, since my taste buds decided to go on a walkabout. I can taste little difference, though, if I grab several bottles of severl different brands and take single shots out of the bottle, then I can sense a difference.
My cousin gave me one of those hot sauce gift boxes. It consists of at least a dozen bottles of different sauces in a 2x20x12 wooded box with a plastic window, SO, it sat around for years and I decided to see what was in it.
I was a bit amazed , while some seemed awfully similar to me, some were definitely different.
I took most of the similar ones and emptied them into an empty store bought hot sauce bottle.
Now - hot - they were, and if I have not eaten any hot sauce in a while, the first tastes get your attention.
I miss the old Taco John's, truly hot, green sauce.