Tread carefully, young bullfrog. Wouldn't want this thread becoming another "what should I take" and getting closed like your other thread. By the way, in that thread I should have known better than to respond with a specific substance, sorry mods. You have the resources to find this out for yourself. Popularity really isn't too important, what you're looking for is a substance which will produce the experience you want. For that, you have trip reports, research, erowid, etc. Look at the trends of psychedelic use, read the discussion brought about by different experiences, and see what appeals to you.