COC such as Magnus, Steelforce, etc or a fixed blade such as ST's, TH's, muzzy, etc. My bow is pretty much an other then deer weapon these days and as such I prefer not to rely on an opening system for my razors/cut. While I've been tempted to try the latest versions I fall back on the "if it ain't broke why fix it mentality". Having harvested antelope through moose with non-mech BH's...I figure it's a solid theory!!!