I don't drink either....My deciding factor was..
Pepsi Products >>> Coke Products
Especially Diet Mountain Dew
and Diet Cherry Vanilla Dr. Pepper
Diet Mountain Dew = kill me now.
Diet Cherry Vanilla Dr. Pepper = product of Dr. Pepper/Seven Up Inc.
Neither coke nor pepsi. That's why you always see Dr. Pepper at both Coke and Pepsi locations.