for me it would deffinately be Oxycontin/oxycodone, and/or Heroin. practically the same to me.
Ive smoked weed, tobacco, meth, crack, heroin, oxycontin, snorted coke, xanax, popped vicodin, percocet, codeine, valium, eaten shrooms, and probably some others i cant think of right now considering im detoxing from heroin, and that really, really sucks but it is also a very psychological addiction for myself as well as physical because I can detox again and again and still go back to heroin after staying clean 4+ weeks. I am an addict no doubt about it been using for a little under 4 years and been trying to quit for about 1.5 of those years.