i was over 500ugs or mcgs whatever you call it on lsd and that was crazy shit... it was unknown dosed tabs, so it might've actually been like a thousand.. i've only been on like 300-400 of stuff comparing my experience with those canadian analogues and that's pretty hard tripping, but once it gets over like 500ugs, that's when i hit some serious ego loss. it was like smoking salvia for the most intense experience i can get over and over again for hours.
intense as far as feeling, i dunno. like i've had some pretty bad intense feelings from downers or anti-psychotics... after being given anti-psychotics, i don't really even like the feeling of downers anymore.. i kind of lost interest in opiates, but after anti-psychotics, that buzz doesn't seem cool to me... like after doing a lot of acid too and realizing i don't like downers, i got a lot more into stimulants with weed and i never really liked stimulants in my early years of drugs... coffee and weed is pretty much my favorite thing now. it wouldn't be so cool if i didn't have HPPD... lsd and analogues are a great feeling, but a little bit of a weird sick body buzz ime. i actually love that feeling, but as i go longer wiith out tripping, i realize it's not really my favorite thing... i don't like mushrooms as much after doing a lot of lsd either. something about the stimulation of acid i like a lot more.
for a quick glimpse into the how intense drugs can get, i'd go with salvia or dmt for shorter acting drugs... if you get ego loss, you can get stuck thinking these drugs last eternities, but in reality the stuff only lasts for a couple minutes... if a person jumps into high dose lsd, it will be crazier than salvia or dmt cause the duration ime.