I've had a couple; always got them at a good price. Gotta love how they open. I've noticed that cops back East seem to look at me funnier when they see the clip hanging out of my right front pocket.
My endura's clip eventually broke, so I gave it to a little brother who didn't care. I really liked the knife, thought. I use my harpy a lot gardening. Had a couple of others, but I don't remember what they were or what happened to them.
I use the serrated blades pretty hard (tho I don't do anything abusive), so I suppose I'm not too disappointed that the serrations seem to wear down. I have to say, though, that the Spyderco blades seem to wear down faster than those of any other knives I've owned.
On the other hand, they're so useful and suited for work, I might just be using them a ton more. I'd buy more at the right price.