BMR, I use SCH guards and knife sections(made in Germany.....leave me alone....if there was a similar product made in the US or Canada I would use it!!!)
HoneyBee in Frontier Sk. is the dealer for this stuff.
The guards have cutting edges top and bottom and the sections are bolt-on and self sharpening. I think they are EXCELLENT.
I cut a lot of fine native hay,including "wire-grass" and have no trouble driving 24 feet of knife through it.
The last guards I bought(couple years ago) were about $16/ea if I remember right. I think it was around $1700 for 24 feet of new knife and guards.
Anyway....thats what I use.
