I'm using my Edgit for the third season. I put it on an Echo high torque trimmer. The longer string never pulls the engine down with the high torque. I have several trimmers that I can use but usually use the one with the Edgit.
I had know about the Edgit for a number of years. After I purchased one, I wondered why I waited so long.
Hustler Super Z 60 - Dixie Chopper XWD3500-60 - Wright Stander X - Echo SRM 2100SB - Echo PAS-260
Echo PB-650T - Echo PB-770T - Echo HC-1500 - Shindaiwa T2500 - Shindaiwa PB270 - Shindaiwa PS344