We have a few cars in the garage and several that are parked outside. They are each hand-washed on a weekly basis. I have been polishing them out, usually using HD Speed or Blackfire One Step. Am I using these all-in-one products too much? Even though HD Speed and One Step aren't too aggressive, are they eating away at the clearcoats? Is there a better product for monthly/bi-monthly protection. Open to ideas? Thanks Phil