I don't drink either one of them , my dad used coke to remove rust from metal . So he never brought any for us kids to drink and we all still have all of our teeth.
https://www.youtube.com/watch?v=z7OdX42NjWQ
I'll occasionally have a soda.....I like Coke the best. Unfortunately almost every restaurant around here will ask "is Pepsi OK"....I only take a few sips, usually drink water so much cheaper.
I don't drink soda much but when I do... coke. pepsi is way too sweet for me.