I was given my first Buck lockback, a model 501, now called a "Squire", by my father. I beat it up pretty good, and it never failed me. I must have had it for 20 years.
Last year, I noticed that the wooden inlays had developed a micron of play, and that it could use a polish/sharpening beyond my meager abilities.
The good people in the knife community (here or rec.knives, I don't recall) put me in touch with Joe Houser, president of Buck Knives. He and I spoke via e-mail many times, and he had me send the little bugger to him for repair. Actually, what really happened was that it was replaced with a brand-new one, even though that's not what I'd intended, having sentimental value for the knife. (He was on vacation, and his staff just did it that way).
After the fact, he went out of his way to find the original, and said that if I'd send the new one back, he'd send the (repaired!) old one back.
All of this, free-of-charge, mind you...
Moral of the story: BUCK folders are tough as heck, and their warranty and customer service is outstanding. Mind you: This was my father's knife, given to a second owner, and after 20 years, that warranty was honored.
Okay, so it's not the "very latest" in stainless steel, or the most modern handle/grip material; But that committment to customer service is worth more than a D2 blade! And darnit, it's served me well for my non-tactical needs for two decades. And it's classic and classy as he//...
One random Webferret result:
http://www.theknifestore.com/Buck501.html
Well, there's my .03
WayLander