Whats the general opinion of the 5 gal. buckets with the tray at the bottom that lets the heavy dirt settle so it does not get on the sponge or brush your using to wash your vehicle. It sounds logical. I have seen them in Eastwoods catalog. Do any of the forum vendors offer these buckets or the trays that sit on the botom of the buckets? Also looking for suggestions on what type of brush I could use to wash my car. I have heard Hogs hair brushes will not scratch the finish. Any recommendations will be appreciated. One last question, are the 70/30 micro fiber towels more desirable than the 80/20?