I discontinued diet sodas because of the aspartame, artificial colors and the acids they contain. (I think drinking them contributed to my developing IBS.) I now brew my own tea at home. It's full of antioxidants, has no added caffeine and is all natural. I feel a lot better and don't regret this decision for a second. You can add the artificial sweetener of your choice or, like me, drink it unsweetened and strong over ice. A slice of fresh lemon can be added for additional flavor and added nutrition.