A tale of two surfaces... I have a gravel driveway with an asphalt apron and so purchased the multi-head system and the Bristle Brush to clean the asphalt and to push the stones back onto the driveway in the non asphalt areas. My first thought was that this is simply too heavy - I'm a strong guy and even with the shoulder strap, have a hard time walking with this. As I turned it on over the asphalt, it nearly pushed me backwards into the street. Ok, that was a learning experience and after a while, I was able to do a good job of clearing the 15x8 foot section of asphalt of stones and dust, however, I was exhausted. When I moved to gravel-over-dirt part of my driveway, the process was impossible. The things has enormous power and is difficult to balance. When I tried to use the brush to move the gravel out of the lawn, all I did was dig deep gouges in the grass. I love the Ego system and own a weed-wicker (not part of the multi-family), a chainsaw and a leaf blower, all of which are great for a weekend handyman. I would hesitate to say this about the bristle brush. I think you can clean an asphalt driveway of debris fairly well, but it is a struggle, but clearing the gravel out of the grass is impossible. If you are a professional and do this all day,, it probably is a great tool.