I got a Stihl Kombisystem this spring. I don't like the string trimmer because I trim up against a border of rocks and the string constantly wears down. Also when i trim near a large long (100') overgrown shrub the string is getting broken off from hitting thick shrubbery. I bought a polycut head and it works okay, it's easy to see the cutting zone, so i don't hit the rocks very often. It handles running into the large shrubbery, and the blades are easy to replace. My problem is either of these two heads is tearing the grass vs. cutting it, the poly head is worse than the string head i think (blades thicker than the string), but would need to do a side by side comparison. Does anyone know of another option that either tears cleaner or cuts? Am i doing something wrong? Do Maruyama attachments fit on a Stihl Kombisystem cause this head looks sweet http://maruyama-us.com/products/multicutter-systems/mc2321-sb/ then look at the Landscape blade in the attachments bottom of page.