No standardisation, at least here, taste spectrum so wide that I can see no reason to actually go "choose" that bold red brand. But in general Coke changed its taste, maybe gradually, by the early 90's. More "apetizing" aroma but tastes too sour for me, especially to blend with liquors. Any cheap supermarket brand is my choice with that bad aroma (which is a stopper for consuming too much) but resembles original taste of the 70's or 80's cokes better. In absence I prefer Pepsi, simply try to avoid Coke. Also, I don't think it's all related to the sugar.