I think the facts speak for themselves. NSF is NOT just NSF. It is THE benchmark to measure how good each product is. If anybody can assemble a water treatment system that passes the 3 standards that I have outlined in the inital posting, I will say well done! Unfortunately, Diamond only passes the first benchmark, not the other 2. So I say again the fundamental job of the water treatment system is to remove whatever is not supposed to be there and retain what the human body needs. If this system pass all 3 NSF standards and on top of this, it can provide some additional benfits, that is a bonus. Btw, since you have been a dealer, do you have any documented tests or results to back up what Diamond claims with regards to the energy filter and stabilizer? I have enquired, but so far, have not been able to obtain any.