Camillus was the first to make the kabar. Case actually designed the kabar in 1942 but was not given a contract due to the fact that they could not produce knives quick enough. Camillus was the largest manufacturer of the kabar, along with 3 other company's including union cutlery, which later became "kabar" during the war. Ontario has held the longest contract with the u.s military, and is the only knife company contracted by the military today. Kabar was not to first to make the kabar, in fact the company kabar came after the kabar knife. Union cutlery ,one of the 4 knife manufacturers during the war changed their company's name to kabar, which today is now owned by cutco. But all in all these knives are all made in the u.s and made well, and it all comes down to preference. But in my opinion I own case, kabar, and ontario, and I think Ontario is the best. Ontario even makes the case xx usmc knife. So two of these knives you have listed are both made by Ontario. Camillus, ontario and kabar, have all made the kabar for the military and have all done a good job, but i think it's safe to say that considering all the testing the military does on its knives and the long contract that Ontario has held, that Ontario makes the superior kabar style knife, otherwise they wouldn't have had a military contract for over half a century. Some people don't like the black coated leather, but honestly I think it proves more durable and longer lasting then other kabar style knives. Anyone who has seen an old kabar with a standard leather handle has seen what happens to unprotected leather on a knife that has seen action and use over time. Not to mention what happens to leather when it gets wet ? It dry rots, which was a big issue on slot of the older knives. In my experience the Ontario can also handle more abuse. But when it comes down to it, these knives were all made in the tristate area, and probably hired and fired slot of the same people, and shared ideas, and bought steel from the same company, so all these knives are well made and dependable, and they all follow the same specs and design, I just think Ontario has perfected it and made their knife to last longer and be more durable. If you served in the military and we're issued a kabar style knife, anytime after world war 2 it was an Ontario. Ontario is one of the oldest and best knife company's in the world.
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