A report revealed Classic Coke was the top-selling soda in the U.S. in 2025, accounting for 18.5% of carbonated soft drink sales volume. Studies explain taste differences and brain science.
https://www.foxnews.com/food-drink/coke-vs-pepsi-why-americans-fiercely-loyal-soda-choice
https://www.foxnews.com/food-drink/coke-vs-pepsi-why-americans-fiercely-loyal-soda-choice