I have had and own hunners of knifes, and a cheap folder is lethal. DO NOT buy a cheap knife unless you dont like your fingers. Wobbly thin knifes are fine new but lethal blunt. I would rather loose my knife than 2 pints of blood!!! A decent knife is a work of art and it is a core part of your kit.
Moving on.......once you get into the steels and styles it can get awfully anal.
best steels are 440C (American Stainless, normally on fixed blades,
the letter is very important) then moving up to AUS8 (Japanese) used by Kershaw and if you can afford one get a deer hunter or folding field and dont lose it. (took us 45 mins to find my mates in heather)
The Europeans have Sandvic and VG10 which is a laminated SS. These are like AUS8 in the premier league and if you only want to buy 1 top quality knife for a lifetime buy a Fjallkniven F1. These are VG10 or the new one is called 3G or powder steel as it has no grain. It goes right into dishwasher and comes out new.
The F1 is used by survival experts and military throughout the world.
I have Bucks, Kershaws and Puma's fixed and folders. I even think that a gut hook has its place on the hill on hinds in the winter. get the job done quick and easy and rest in the larder later.
If any of you are doing DS2, take 2 knifes with you, one on belt and one in pocket, shows contingency planning if one gets contaminated, dull or lost.
I have yet to find a knife and sheath combo in a fixed blade that suits perfectly. So I get them made.
told you it gets scary.