I have begun to only drink diet/zero sugar drinks rather than full flavor. Mainly because they put high fructose corn syrup in everything, but also because they put too much sugar in everything which really is bad for you. People can say what they want about how aspartame and other fake sugars are scary, but it really isn't as bad for you as high fructose corn syrup and other bleached sugars they might put in soda. Because those sugars spike insulin, while most fake sugars like aspartame do not. But be warned some fake sugars like Sucralose may spike insulin so you have to watch out.
As for sodas diet Dr. Pepper and Pepsi Zero sugar are my favorite.