Well the quick wash and blow out works fine for me as long as you are just changing to a flavor of the same type. But I use 3 separate tanks for my daily flavor profiles of Tobacco, Fruits and Deserts. For flavors like Menthol which I do not like by the way they don't play well with others. But for similar flavors you can just wash the tank or fill with the next one because a little blending of the flavors for a few pulls to me is acceptable. Basically it is whatever works for you! Good Luck
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