The VXR detail was great, really good write up. I know it got slated on some forums for it though.
I see where you are coming from Matt and totally agree, it's a nice stage to tell the customer.
But to get back to it as a detail the only advantage of PPM filtered water imo will help reduce with water marks and help with the drying stage, but if he is going to then machine polish i feel it is a total waste of time. Thats only my opinion though.