I use a 5 hp RIGID shop vac, about $65 at Home Depot. Works great! Be sure filter, hose and canister are really clean, reverse the hose to the exhaust side and point it away from the car for a couple of minutes to get any small stuff out you might have missed. It takes less than half the time as a drying towel. It gets all the cracks, trim, molding etc. dry without stuffing in the edge of a MF. I use the tapered crevice tool attachment as a nozzle which gives the air a little more velocity. Probably not as much air as a leaf blower but it works fine for me. No more worries about self inflicted swirls from hand drying.
Z