This has been an interesting thread...fun and serious at the same time. Most of the discussion on here has been about the WW or the Grizzly heads. For a number of years I used the WW after they came out because they sharpened easily and gave me better penetration than the Snuffers. Then I tried the Muzzy four blade Phantoms. I sharpen them using a Razoredge jig (which I know Charlie Lamb uses on his Mag I's) or one of Sharpster's, and found that after exiting an animal (deer and bear) they were still exceedingly sharp. I also found that even when shot into certain soils, usually soft, wet, bog like soils we have in our swampy areas, they did not seem to loose their edge at all. I assumed it had to do with the fact that they were made with "cutlery grade" stainless steel. I love the way they sharpen up and hold their edge. I have found the same thing to be true with Razorcaps, real easy to get that popping hair edge and an ability to hold it under the conditions I just described. I have also found that the Razorcaps, for me, have put down animals about twice as fast as any bh I have ever used, which I attribute to the edge I can achieve and the quality of the steel (more bleeding in less time). I guess all I am saying is, as some have suggested, getting a good edge is important but that edge will work better as the quality of the steel improves. Just for the record I use the black (when needed), blue and red DMT stones on my heads. Razorcaps I finish with very light strokes on a ceramic rod and the Phantoms are finished on a leather strop glued to a wooden block.