Quest makes two versions. I use lower foam in IBAs (easier to rinse)and foamy in the SS, The foamy works well. I'm not a fan of low pressure wax coming out of a HP gun nozzle but I guess it would be considered effective.
Has anyone dispensed two different wax products out of a low pressure gun? If the changeover time is not different that would be an optimal way to apply a Rain-X product. The "ceramics" as I understand are more about gloss and slick feel, and the repellent products are more about protection.