I purchased this unit to resolve swirls and other imperfections on my classic Chevy car. This unit is easy to use and did a good job on most of the imperfections that I attempted, and certainly resulted in the best finish my car has had since it was repainted in 1979. However, being that it's not a professional rotary unit, I was unable to remove the deepest of scratches and swirls. In understand that a professional unit requires skill in order to prevent damage to the paint while using it, so it's just as well that I purchased this unit instead of a pro model. In any case, the entire process was far faster and better with this polisher so it certainly was worth the money. I gave this rating 4 stars instead of 5 stars becuase the handle and backing plate need to be disassembled for it to be placed back into its plastic carrying case, which is an inconvenience.