my dealer gave me a free sample of some "new" trimmer line today. The best way to describe it is square line that has been twisted. Therefore the line has many sharp edges. I admit that I was skeptical at first but to humor the guy I used it in my Tanaka trimmer. You would not believe the difference it makes. I think that it will cut our trimming time significantly. If anyone has used this stuff then please let me know if there are any cons. Also if anyone is interested in the company name I will get that information as soon as possible.