I drink water or coffee mostly. If I am out and the tap water tastes gross, I will have iced tea, but only if it is fresh brewed, otherwise it is Coke and then Pepsi if I have no other choice.
Coke is disgusting. Like if given the choice between coke or death, I'd be dying. And anything sweetened with corn syrup is gross..so diet pepsi, or pepsi max.
If you mean Pepsi/Coke as in the product, my vote is for Pepsi. If you mean as the distributor, what about Dr. Pepper/Mid Continental bottlers? Dr. Pepper > Coke/Pepsi!