I've had my KA-BAR with D2 steel extreme folder for two thats right two months and a week. I hated it at first because the thumb disc kept cutting my finger and the clip was way too loose! After my dad fixed it up he said I could have it. I have cut string, wood, copper wire, literally beat it on wood, and done all possible. But for some reason no matter how much I hate it, I've learned to grow a soft spot for it. The thing still cuts like a mad man. I don't think the design is perfect but I'm totally impressed in the D2 steel.