I chose Heroin from the list. I have only been acquainted with this substance, I must admit, for about a month. My route of administration is insuffulation. Although, I'm mostly into pharmaceutical opioids (mostly oxycodone and hydrocodone). But basically I prefer the opiate family of chemicals, over pretty much anything else. I feel euphoric, blissful and totally stress-free when I'm on them, plus the added benefit of having high functionality in my everyday tasks.