I think the more important issue is your washing techniques. It all starts there. We had a good discussion of proper washing the other day. I am pasting the link here for you.
Another day, another mod. Oh, and some detailing mixed in there too!!
As far as your wax question, I would use a wax that wipes off almost dust free. Pinnacle Souveran is the best wax that I know for no dust, Signature Series also by Pinnacle as well, another excellent wax with an easier to swallow price tag would be Natty's Blue from Poorboy's World. Cultivate good washing habits and always use back and forth motions rather than circles when you apply products to the car. I hope this helps you. Good luck.
