I try to limit my soda intake, sometimes I do better than others, but I'm weird. Like all other types of soda I mostly just drink the normal stuff but if I have Coke I usually get a diet one and not because of calories. My mom has drank that stuff since I was little so it was all she really kept in the house. I know it sounds weird, because it does, but regular Coke just tastes way too sweet and overpowering to me. I guess that goes to show how taste buds adapt to like the taste of things you have had over the years or something?
That said give me a Mexican Coke anyday over either regular or diet Coke. Or just some Mexican coke, whatever.