Opiates by far. They turn me into a hyper extrovert. Oxycodone in particular, as it provides such a strong speedy effect in additon to the exteme euphoria and self esteem boost. Opiates are the perfect drug for socialising, because you can be incredibly high on them, yet still appear functional and non fucked up. They not only remove ALL TRACES social anxiety, but also give me an enormous self esteem boost, and lower my inhibiitons to just the right level. Benzos also help to remove social anxiety and inhibitions, and alcohol has always been very successful for me in making me more social. I have yet to try GHB, but I am interested in using it as a replacement for alcohol at parties, as I don't find that opiates or benzos are quite as good as alcohol in a party setting, they are better for being high on and conversing with sober people.