Which one would you use on silver audi paint with very light scratches?

 

one removes scratches and the other is a cleaner/sealant.
you can use both as far as i know.
i do the 106 then nanopolish and then klasse sg, recently i replaced klasse with rejex and liked rejex better.

 

If you want to actually do some correction, legitimate removal of the swirls, you need 106ff. The AIO is a cleaner wax that is designed to make the finish look good in a pinch, it won't remove the defects in the paint.