Redbull vodka is the bomb. The caffeine and taurine cancels out the sluggish feeling from the alcohol, but you still get intoxicated. Great stuff. I take a Xenadrine before going out as well, but as already stated, be careful before you know your tolerance. I also would advice against drinking redbullvodka while on E.
They are in the process of banning redbull from bars in Sweden due to a couple of documented deaths from the drink. I say bullshit, but who knows?