i was always a chammy man, but learn't that any bits of grit that are left on the paint work can get caught in the chammy and scratch the paint (swirl marks etc). microfibres are good, i have a large drying towel basically a microfibre. also used to use a rubber blade but again can scratch although to give it a good clean before hand was always my technique.

I tend to clay my car after washing whilst wet using quick detailer and wipe of the residue using a microfibre cloth