In my screwy accent issues, the one I never picked up from the northern contingent was "pop". Grandma would tell Grandpa to make sure to pick up the "soda pop" when he went to the store.
I've always been "soda" for anything that fizzles and "coke" for Coke or Pepsi.
As for "ant"/"aunt", I remember as a young child getting corrected by my maternal aunt on correct pronunciation, because I really thought it was "ant" for awhile.
It goes either way. If I drawl it's "aunt", if I'm talking fast and redneck it's "ant".