As others have chimed in, I also find zero problems with the Sams Club Members Mark
Microfiber towels. These have not scratched paint (that I have seen), they hold up well
and they are a great price point.
I believe that they are also called "ProForce" towels (but I could be mistaken).
For 14 dollars, it is hard to find a better deal. I stay with cheap MF towels, just because I like
to have the cleanest and best quality towels for my details. When I have a picky client with an
expensive vehicle, I always quote them the cost for purchasing brand new towels, clay, and
carpet/upholstery brushes. I have a client that doesnt want any chemicals used in his car,
only water. He has no problem spending a little extra to have only pristine surfaces touching
his vehicle. As a bonus, I have some new (gently used) equipment after the detail.
Another reason that I like cheap MF, is that you never know when you will drop one
on the ground (effectively ruining the towel).