I handwash my car in the country using well water... where everyone lives on 50+ acres of land. I am talking about real well water from an electric pump on the property because there is no city water available. I get more water spots than in the city. Our water must just be hard water. That is why I always bring it to the do-it-yourself car wash and spray it with the spot free rinse.

You guys are right... avoid the brush if you can. I have heard some really bad stories about the brush but after 7 years of using it once or twice a week I never had a problem. I try not to go to those hole in the wall places. That is just me.