i stopped drinking soda altogether in july. nothing but water, milk, juice, etc. and coffee, which is kind of bad, but it doesn't completely assfuck your teeth like soda does.
my friend dan drank soda every day for about 2 or 3 years - the sides of his teeth are literally eroded. you can see inside the motherfuckers.
so yeah, water all the way.
i curse your pubes with the fleas of a thousand camels