It is kinda small for my yard (over an acre) but it works well. I have not had to replace the string yet so I can't tell you about that. It is light weight and easy to use. It will take down very tough weeds and tall grasses but you can only swing it a few feet in each direction and it has to be pointed straight down for good coverage (You can't hold it on any kind of angle or it won't work well).
Rated # 2 in Electric Trimmers & BlowersSee all 5 reviews