I can't find enough information about the differences in these products to know what I need for my home. We have hard water, chlorine and heavy metals. One company has proposed a Water conditioner with KDF Aquafil Systemwith a Fleck Control Valve for $1495 installed. The other company is suggesting a Vortech Unit with Fleck control valve for $1700 but I am sure I could negiotate. Pros? Cons? Differnces? I am really lost trying to compare and get the best thing for our needs.