I drank tons of soda when I was a kid but I was always skinny then too. I've never liked diet soda. Periodically they come out with new 0 or near 0 calorie sweeteners that are supposed to taste more like the real thing but they all have that diet aftertaste to me.

Mostly what I drink at home these days is either water or iced green tea. The grocery store I go to (Publix) sells it by the gallon. It's somewhat less sweet that than the regular (black) sweet tea that they sell (though I could always make my own) and partially sweetened with honey. I'll sometimes have regular soda when I eat out but more often I have water or sweet tea. I never developed a taste for unsweetened tea either though it is probably higher on my list that diet soda.