I would, in the way of guilty pleasures, IV Mephedrone at a safe, but potent enough dose for this infamous rush I've heard/read about for yrs now since it's been heavily banned. Better, longer, more hedonistic rushing than IV high-purity cocaine, IV potent crystal m-amp, or IV MDMA from what I've heard. Full body and mind orgasm, pleasures beyond what the human brain should experience.
Copious consumption of 2mg Xanax/alpraz bars + deep into IV heroin/cocaine addiction and my homeboy and I owe a hood, black "higher-up" dealer around $150 for a front on weight (was so strung out I was selling caps/0.1g of heroin, but using up a lot and sharing too generously because I was high as fuck on a total of roughly IV half gram de cocaine, 1.5-2g's of high-grade/fent-laced heroin, and often high-end doses of potent benzodiazepines. It ended in us both breaking and entering a house of a weed dealer we both knew, his mom happens to be in the living room watching TV (now it's a home invasion charge if we get hemmed up), she's completely unaware we were in the house! At all! Saw her purse on the table in the kitchen and snagged it. She had like $360-something in cash! We had a grimy, scumbag come-up that day. I felt terrible about it when the zo's wore off, so I shot some more dope to ease the pain..