Xanax, but be careful.
Don't get too into any one addictive drug. It's ok to experiment, but keep it on the weekends. One weekend do some coke, next weekend take a few Xanax bars, maybe after that put some opiates on your bowl... Stay away from crack, and be careful. Don't use meth as a recreational drug. It's not fun. It is useful when done at the right time and done correctly.