In my previous post I am not claiming SG6 is not good, just that their claims are not sufficiently revealing.
Take for instance, they claim SG6 can produce 0.001-0.005 microns ion particles, but they do not state at what PPM? Suppose you switch the knob to 20 PPM, but it generates low quality CS with 0.10 - 0.50 microns, then it MAY not be effective for you.
I remember reading a post from steve555 that mentioned about a friend who quited taking CS after experiencing Herx effect, that MAY be the one. Ask him. But again don't just take my word for it (I AM NO DOCTOR).
cheers!
p/s: Having experiencing Herx effect is a good sign.