Haven't tried Coke Zero (don't eat or drink anything with man made sweeteners, and I consider even Sucralose to be such), but occasionally I buy CocaCola from Mexico. It uses real cane sugar, comes in glass bottles, and the taste is definitely better than the domestic product.

Unless one is diabetic, or slugging down a six pack a day, I see no reason to have diet anythings. I get a kick out of watching Mr or Ms 2X4 eating a double, double cheese burger with extra large fries and a large diet soda...as if that soda makes it alright.