I have a thing about paying alot of money for folders, I think compared to a fixed blade their role is basically to be a slicer, cutting line, zip ties, tape, paper, that's about it. Cleaning game will gunk up the action, working parts can fail. I'd rather save the bones for a good fixed blade whose job is to do just about everything from chopping wood to whittling to cleaning game to cooking dinner, etc. My favorite outdoors folders are:
RAT 1
Kabar Warthog II
CRKT Lightfoot
Buck 110
1st gen Al Mar
as you can see Aus8 is a reoccurring steel, just because it's common in 20-30 dollar folding knives, and it is a good balance of blade strength/edge retention, plus it's very easy to get extremely sharp-for a slicer, that's a good thing. Plus if I lose the knife I'm not going to cry. Just because your high end folders are made from better steel doesn't make them more functional, I can run some wet and dry down an AUS8 blade and in about 30 seconds it's hairsplitting again.