I have had many trips of different sorts and their fond memories are still with me.
Visually, DMT is the winner.
Physically, Ketamine does it for me.
Psychologically and on a sensory level, LSD is profound (and lengthy).
Emotionally. high dose MDMA is amazing.
... and for an easy"tickle"/lightweight trip, mushrooms are great.
But what is interesting about "tripping" is that it is anti-addictive (for me, anyway) ... you never wake up feeling "man, i MUST have a trip today at all costs !" it never happens; instead you get weary about how important the next advice is:
you always seem to remember those that you shared the trips with. Trips needs to be planned (and like with LSD, have some Diazepam handy), in the right setting and with the right people ~ once that is sorted, the "fun" potential can be maximised.
For example, getting lost in the forest, finding isolated beaches and away from people yielded the best results with LSD.
(I used to inject LSD but that's another story for another time).
EVERYBODY ("normal people") should try to find and use LSD at least once in their lives - i genuinely believe that.