Opiates are euphoric for me in a very mild but pleasant way. I think I may be the only one, but I prefer hydrocodone to oxycodone, which I find too strong. Heroin tends to make me sleep for 12+ hours after doing it. MDMA used to be super euphoric until I did it a couple of hundred times over the years, now it would just be a pleasant feeling I think, but I haven't done any in a couple of years, so maybe most of my tolerance is gone away by now. MDMA plus heroin is pretty good, but I was barely conscious the time I did that. Cocaine is euphoric, but the comedown is shitty. Crack has less of a comedown than snorted coke IMO. IV coke is very intense and pleasurable but can be scary, and I don't use needles anymore. Why damage you veins and poke holes in your body just to get high? Methamphetamine is very euphoric and long-lasting. Shrooms and MDMA is a very good combo, very euphoric. LSD and ketamine is a very strong psychedelic mix, but is not really what I would call euphoric. MDA is always good, but hard to come by. Alcohol can be fun. GHB can be fun, but is easy to overdose on. I don't really like benzos unless I am ready to crash. Finally, although I rarely get a chance to smoke it anymore, I find that you can learn to make the kind bud high feel super euphoric once you get used to it. MDA plus kind bud is really good. LSD plus marijuana is good. Ritalin is good. I could go on, but you get the idea. In the end I find that methamphetamine plus kind bud is the best, most intense high partly because it is one that can be repeated indefinitely, within reason, over the years without tolerance becoming an issue. I could go on, but you get the idea. Namely, there are losts of good drugs and good drug combos, but I'm not sure that any of them induce true euphoria. In fact, I'm not sure true euphoria even exists or that we would want it if it did.