On my own car, I only do rinseless washes, and I use ONR and the Big Red Sponge. No marring whatsoever. You do have to be careful to understand that you are "applying" the ONR, not scrubbing. I was quite reluctant to try the sponge, but it actually does work.
For customer's cars, I use microfiber mitts and two bucket method, but I am claying and polishing anyway.
For customer's cars, I use microfiber mitts and two bucket method, but I am claying and polishing anyway.