I think this has been mentioned before, but anyway: obviously the less you thouch the paint of your car, the less swirl marks. So the other day I dried my car using a garden leaf blower. Took me just a few minutes, not leaving a single drop of water anywhere - not even in corners and recesses. The condition is the paint is well waxed and thus hydrophobic. Two precautions though: take care that you do it on reasonably clean concrete or tarmac ground, so gravel or dirt doesn't get sucked into the blower and is shot against the car. And secondly, be careful so the cable doesn't rub the paintwork. Farewll, drying cloths...
2004 V6 Roadster