Here is an awesome New York Times questionnaire and interactive map that talks surveys you about your dialect, if you are from the U.S., and tells you who and where you have the most in common with. Check it out here. It got both of us right.
Via http://loststates.blogspot.tw/2011/03/soda-vs-pop-vs-coke.html
By the way, the answer to the title is most definitely “pop.”
