Mostly the nappy wash mitts for really grimy days, otherwise it get a synthetic wool mitts - both are microfiber. I also have dedicated MF nappy mitts for the wheels, and a tire brush. A bunch of different MF towels for drying and polishing. I used to use Meguire's Gold soap in my pressure washer until I got my foam canon... now it is Chemical Guy's honey dew (fun for the kids to shoot the car in foam). The car was top coated with Turtle Wax hybrid solutions ceramic spray last Fall, and I have the matching quick detailer for the driving season.
Oh and I'll dry it with a water blade if I feel lazy.