I have CQuartz Finest on my truck, installed August 2015. At this time, it’s still hanging in there. Truck is garaged kept, receives a deconn wash about once a year, and try to wash it once every week to week and a half, weather depending. Also, topped with RELOAD usually twice a year. I use a foam cannon with three bucket method, and filtered air drying. I will use a drying towel to hit some stubborn spots with Echo2 or Elixir.
We have since moved, we do not have a CQuartz Finest installer nearby so I’ve talked with James about recoating this fall with CQUK and TiO2 myself.
At this point, I got my monies worth.