I've never tried vault before, but I liked surge. I think you could only buy surge in the states, because I've never once seen it here in Canada.
I call a carbonated beverage POP, and always have...

Everyone I know calls it pop! The stereo-typical american is the only person that calls it soda!

I always thought it was like the different spellings of color (colour), or the pronunciation of the letter Z (zee or zed). Also like the british calling TV the telly...
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"I know that you believe that you understood what you think I said, but I am not sure you realize that what you heard is not what I meant."
http://www.cardomain.com/id/88delta88