Shanghaiist prefers sugar-free bevarages. We're not getting any younger. And we'd prefer our waistline not get any bigger. (And if it does, we'd prefer it be the result of consuming good beer.) We've been known to have friends who happen to be flight attendants bring us packs of Crystal Light from back home so we can satisfy our cravings for sweetish beverages that aren't full of sugar. In China, there are few sugar-free soft drink......