well, I guess I am going to vary from the norm, but my vote is for vg-10. As far as edge retention goes, it has my vote amongst all mentioned. I have been using vg-10 steel in my kasumi kitchen knives for about 4 years and they are awesome. I carry a sog vulcan with the vg-10 blade and can;t find a complaint for the life of me. in the end, all are good steel, so I doubt you will be dissapointed by any of them. trust in what you carry and your ability in it will always overcome the minute differences is all these quality steels.