21 BMW M550i xDrive, 10 Nissan Murano SL
The water at my house leaves horrible spots on the cars. Its running through a Culligan Whole House water filtration system, but apparently the salt doesn't soften the water enough. Was talking to one of the techs over at Aerolon, hoping that Tech Shine would help keep the spots away, and he suggested the Griots portable deionizer. Wondering if its worth dropping the coin and giving it a shot. I mean its only $300. After spending $1950 on the BMWs paint and $600 on the CQuartz UK ceramic, its only like 10% more.
Thoughts or other ideas? Waterless washing has been brought up, but its not a solution I like as it tends to leave minute scratches and swirls.