I have noticed that with use, the taste drops off on the vivi's. I am having better luck with the Titan I got. I have VERY high hopes for the Raven. The Vivi will rock for awhile on a new head...but after cleaning, the taste is not as strong.
i need a solution for my vivi nova lack of taste.. this doesn't sound like there is one.. I have very little taste with it. I am kind of shocked because my vision stone tank had the best taste yet.. why take the step back?