I have a folding buck knife that I have had for nearly 30 years. Many years ago I broke the tip off digging a slug out of a tree and since then it sat in a drawer. This year I sent it back to Buck knives under their lifetime warrranty. The blade was replaced, no questions asked, and the turn around was pretty quick.
That being said I don't use a folding for cleaning deer because the slot in the handle collects crap and needs a good cleaning afterward. I just got a Grohmann GR1 which is their original design. It feels great in my hand and I look forward to using it for many seasons. It wasn't as sharp as I would have liked out of the box, but I am real particular about how sharp my knives and broadheads are. I am not happy unless shave hair with very little effort.
http://www.grohmannknives.com/pages/outdoor.html
Bob