If I may add to Chris’ response, I think you ought to add a D) and E) as well.
D) Fit to your hand. I bought a Becker Knife & Tool Companion because the big handles fit my hand well. I can hold that thing all day without my hands tiring too much. That same knife that fit my hand so well gathers dust in my closet because it is too bulky to comfortably carry on my leg or hip. There are other knives (read bigger) that attach well to a pack, but I’d still want a smaller knife on my person. That doesn’t negate the importance of how the knife fits your hand.
E) Method of carry. It is of no use if it isn’t on your body. How will you carry it; around your neck, on your hip, your leg, lashed to a pack. That Becker fit my hand well, but as stated above, it’s gathering dust because I don’t like how it carry’s.
There are hundreds of knife makers that sell fine products (CS, included). If I were you I’d focus on: what it will be cutting, how it fits your hand, how much you can spend (and it need not be a month’s rent), and how you intend to carry it. Pretty much in that order. Then worry about steel, brand, and if you want a satin, epoxy, or desert camo finish.
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