Honestly, I like Coke better. I think it just tastes better; I don't agree that they taste the same.
However, it's not a deciding factor for me. If I were to go to a restaurant and wanted coke and they had pepsi, that would be fine.
However this is all moot anyway. I gave up caffeinated drinks in November and not going back
Sprite tastes good too. How about a sprite vs. sierra mist discussion