Coke & Pepsi are nowhere near similar enough, Pepsi makes me vomit. I can taste the difference between Pibb & Pepper, and both are good but in a different way. HOWEVER, Dr P has come out with a Dr Pepper Cream Soda that is TO DIE FOR!!!
honestly, if I had to choose from coke or pepsi. I do like Pepsi better. Pepsi used to make a real sugar version during the summer, not sure if they still do it, the real sugar made it even better.
But when I drink soda, it's usually Coke zero. it tastes better than the Pepsi version.