2ce. but i've only ever tried that and 2cb as far as RCs. everyone is gonna like something different. or has at least tried different stuff - so can't say for sure which ONE is best
Everyone may have a favorite RC, but they may also have a favorite RC for a particular application or reason. What mainstream drug are you trying most to replicate or what aspects are you looking for?
4-aco-dmt or 2c-c are my current favorites...ESPECIALLY IN COMBINATION!!! the one thing i would change about 2c-c [if i could] would make it not burn like FIRE WITH CHLORINE when snorted...but what am i gonna do? haha...snorting ~60mg of 2c-c would be ONE HELL OF A RIDE, but never something i'd do, simply because the immense pain and INSTANT onset may cause me to think i am being murdered.