I agree totally.
Having spotless water at your disposal is game changer.
I bought an On-The-Go dual bed(2 tank) system a couple of months ago because I was losing my mind trying to get high profile vehicles that wouldn't fit in my garage dried before the sun dried them for me and leaving water spots, of course. My water ranges between 750-900 PPM TDS! It's a nightmare! When I bought the OTG system, the first thing I did was wash a black truck and rinse with DI water and stood back and watched it dry.:laughing: As the water droplets evaporated leaving NOTHING behind, I just smiled, which became a sh!t-eaten-grin, which literally turned into me giggling. Corny, I know but when you've dealt with water this hard in the Arizona sun for as many years as I have.... well, it was almost spiritual.
Unfortunately, the super high TDS depletes the resin in the system very fast and ends up costing something like $2.00 per gallon to produce. After burning through the resin within a month, I decided to go with local DI water company, Purtec. It's a little bit less expensive than what you pay for the Culligan setup but I get far more spotless water out of a tank than I ever would or could with the OTG system.
Yeah, foaming a vehicle is a totally different experience with DI water. Im the MAN
My OTG dual bed system is for sale if anyone is interested. The details are linked below.
Dual Bed Deionizer Standard Model - On The Go - Portable Water DI