I have knives for hunting, camping, and everyday carry. I don't collect them though, I just have a few that I will replace when they become damaged.
Right now I have:
A Victorinox Swiss army knife for everyday carry.
I have some kind of assisted open Kershaw folding knife for everyday carry, and personal protection.
I have a Buck Special, and a Kershaw Roughneck for hunting and camping.
I had an SOG Fusion Fixation, but it broke in half at the handle when I was chopping a small branch for firewood. Upon close examination it appears that the knife was not a solid piece of metal but two pieces tack welded where the blade and the tang meet. I'll never by anything SOG again.
I also carry a Leatherman Blast multi-tool occasionally, especially when I go fishing.
My friend has purchased many knives from a company called Blind Horse Knives. I'm thinking of maybe buying a hunting/camping knife from them since I've examined my buddies and they seem very high quality.