Any bet i've made when tequila was involved never turned out good for me. One lead to a severe sinus infection that has probably compromized the function of my right nostril. Vodka always leaves me out of it the following day (days in one incident) but if you drink water while you're drinking beer, liquor w/e it almost completely prevents any hangover the following day and in fact you can drink a lot more alcohol and have a higher threshold of being drunk before you get sick. Only problem is that sometimes if you stay awake for a long time after you've been drinking it starts to break down the hangover toxins sooner and you end up having a hangover while you'res till awake.