So today I got one of the KaBar Zombie killer line knives. Of course the first thing to do was go chop stuff up right!? ( Sorry no pics at this time someone dropped our camera ) So it came with a good factory edge, But I touched it up till I could push cut newspaper. The steal is SK5 for the record from my understanding that is a little less in quality than 1095. So I went and chopped on a 6x6 and a tree with a diameter of about 8-9 inches I would guess. It chops pretty well for a blade a little over 9 inches but it is very quick in the hand due to being 3/16th inches thick. Anyway after making maybe 70-80 chops it couldn't even shave hair. Now I was used to going out and beating my S5 to death and still being able to push cut paper sometimes newspaper still! So for me I realized that compared to the Kabar my S5 held an edge for about 5 times the chopping that the ZK does. Just felt like sharing this. I will do a 511 and ZK test off when I get the 511.