I think that all depends on how you view juice in general. I try to mix flavors at a minimum because it is my belief that if anything is found to be harmful in what we are vaping it may just be the flavorings. Like I said everyone has their own opinion on this and is entitled to it.
I also find that if you add too much flavor it ruins the taste but again that is JMO
I also find that if you add too much flavor it ruins the taste but again that is JMO