Another thing I always do is really look at all the Microfiber towels I am using, washing and about to use again, before I ever touch a panel with one.
It just takes a sec to look at the surface and make sure there is nothing on there that is a different color - like a speck of black/brown dirt, etc., waiting to get rubbed into your nice finish..
Microfibers are so good at many things including picking up and holding onto everything, right ? Well, good ones, anyway, right ? So it helps to just before you put that down on the car paint, look it over and make sure it didnt grab onto something that doesnt belong there.
Around here, the thing I find the most in my towels is a piece of compost, something brown, since I live in the world of big trees composting continually, all their messes 24 x 7..
Good luck with this !
I am NEVER going to pay prices that high for anyone's product... That is just plain crazy for my needs and business plan.
Dan F