steve8

I've had no issues with soap and water.

wan65

I just ordered the Nano sponge Fine grade and Med. grade, Ill use the fine grade on the vette and the med. grade on my 2012 dodge 4x4. I haven't clayed bar or use the nano sponge on it since I bought it, Im sure it could use it.

Merlinii

I've used both.
The MED will cause marring. That's OK if you're going to polish the paint afterwards.
I have not found any micro-marring that I could attribute the FINE grade Nanoskin