Boarder

this is a very good question. i have looked this up alot aswell.

from what i read spirits - like vodka - are the best. wiskey is alot worse than vodka.
and its the stuff mixed with the spirits that pack on the fat. try and drink diet coke with them - or if uve got the balls to ask at the bar a vodka and pepsi max haha.

this is what i have read across the web, have no factual evidence to justify this so no shouting at me if im wrong.