I am sure if you did a prolonged study you would find that a piece of rubber breaks down faster in vinegar than pure water, but I can't imagine it is a measurable difference in short (as in hours compared to weeks) exposures. I say go for it.
What ever I can bick up at the store for $.50 a botle. If I feel like being fancey I use red wine vinegar... If I am dealing with asian fish (or south pacific fish) I use rice wine vinegar to make them feel more at home!
safest is distilled white vinegar... others can quite easily have contaminants but probably won't do any harm. Keep it safe and buy distilled white vinegar is my suggestion.