Cola Wars

It is amazing how vocal people can be about their preference of cola's. The cola wars have been raging for years with still no clear favorite in site. There has been smear campaigns and even documentries to sum up the events of this long saga. I have seen people that believe so personally in this that they will boycott restaurants or events that sell the product they don't prefer. I personally don't have a favorite and my preferances are normally driven by price, if one is on sale over the other that is the one I will buy. What is your preferance and why.