Purchased the WW brush from DD after first trying the very similar Montana boars hair brush, which is a quality item, but the bristles clump together when wet. The WW brush has evenly distributed bristles that stay that way when wet, which makes cleaning much easier. The WW brush works great to clean wheel faces quickly with a dedicated wheel soap - my truck has gloss black wheels with machined highlights (clearcoated), and I have not noticed any scratches due to use of the WW brush. I also find it useful when removing bug splatter from the front of the vehicle in conjunction with a quality bug remover spray. For both uses, I usually soak the WW brush in warm water and a small quantity of pH neutral car wash soap to further soften the bristles and boost the cleaning power just a bit. These brushes aren't inexpensive, so I recommend the WW brush for your detailing arsenal if you must choose just one.