3) How many milliliters of e-juice you prefer to?(eg: 10ml, 30ml, 60ml and so on)
prefer to buy? whatever size the store has of the flavor i want. if its a new flavor im buying the smallest bottle they have.
mixing up myself? i mix 120ml batches at a time per flavor, then move to a 30ml bottle
i carry around with me a 30ml bottle that lasts me around a day