I'm pretty much down to try anything that I havent given at least one shot, the exceptions being shit like Datura or PMA.
These are just the ones id most like to try.
GHB/GBL
Strong Short-acting Barbiturates (Secobarbital, Amobarbital, Pentobarbital)
Methaqualone
Temazepam
Midazolam
Etizolam
Zaleplon (Sonata) - Since I really enjoy Zolpidem I want to see how it compares
Fentanyl
Methadone
Ketobemidone
Tapentadol
o-Desmethyltramadol
Real Opium, though my tolerance may be too high for it to do much at this point.
Methoxetamine and other arrylcyclohexane derivatives (I love K and PCP so I'm interested to see what other gems might be out there)
Mescaline (Pure or in Cactus form)
Any 2c-x besides E or I which I have already sampled.
Any 2c-t-X
DPT
DET
Other substituted tryptamines besides ones I've tried (4aco-DMT and 5meo-MiPT), too many to list.
AMT (Also like to try AET again, the 2x I tried were great)
A higher dose of DOM, since I didn't get too much of a feel for it.
Methylone (Bk-MDMA)
MBDB
MDEA