back in the day when i used to wash n polish my cars i'd use Autoglym 03B Fine Abrasive to cut (using a variable 600 to 1200rpm polisher, wet polisher if you can afford it) then wax with mothers carnauba wax. low rpm mostly so as not to burn the clearcoats, and constantly mist with water... better if you have a lackey to mist for you.
no need to cut that often, i do it once a year. claybar instead before waxing if you're not cutting.