as a fan of novel intensity, i'd have to rank the ol' *cb-1 agonist + NMDAr antagonist* (take your pick, they all take me farrrrr out) combos as being up there with both salvia and DMT in bringing me a joyous and delicious bizzarro world treat for my brain, which i like...
but if we are talking traditional serotonin 2a psychedelics, i'd be hard pressed to choose a favorite.
for the all-encompassing, thought provoking, ecstacy producing, hilarity ensuing, tickle-me-pink, and maybe-slightly-hopefully-therapy sessioning trip, i'd prolly grab a 400ug dose of ALD-52;
for the real "what are my options at this road block?" type of dissecting therapy for strong mental work, i'd need wild-foraged mushrooms.
something about eth-LAD calls back to me, as well (been a minute); and for the same reasons, 4-AcetOxy-DPT... strange, quiet beasts that definitely will be kept around, if life allows.
and if we are to consider cannabis a psychedelic (i certainly do), it ranks up there with my most treasured.