I would love to have some of the old school Bear razor heads, that screw in tho not the glue on type, I used those things for a long time, liked them because they could be resharpen to a razor edge, loved that carbon steel.
I hunt with a modern broad head & have been debate'n on try a expandalbe (sorry guys), dont think I'll be use'n a piece of flint anytime soon.
Seems I read something sevral years back pertaining to use'n flint to make a type of scalpel blade to be used for surgery, they said even the best metal blade had microscopic burs on it & the stone could be manufactured so thin & sharp it helped with the healing process, if I remember they siad they could get a stone edge down to the thickness of half a micron. (how ever thin that is)
Something to ponder on I guess.