OK,it's getting close to being time to change filters and Might as well do the DI while I'm there.So I figured I would try the spectra pure DI and see what the hop la is.I already love their doaser's so let's see what the di will do.I will change mine when I see 3 tds and I have a installation date of my present DI so I will see the diffrence by how long it takes it to get to 3 tds.So my big question is what's the preffered spectra pure di?? Max cap or silica buster??