Best tasting oral/sublingual: clonazepam
Best tasting snorted: dextroamphetamine
Best tasting smoked: besides weed of course, I'm sorry but I love the taste of crack lol. Only smoked it once in the last nine years, but Jesus did a huge blast used to be tasty lol.
Worse ever was LSA (chewed seeds), Orange generic-brand DXM syrup, and Meth smoke.. Only when you're using a 3 jet torch and have WAYYY too much smoke ughh, almost threw up in a freshly loaded pipe.