I have a very loose Gerber Covert, that I just have to think about opening. I need to tighten it occasionally, since I don't want to LocTite it, but this thing has saved my bacon a couple of times when I was in Chicago. I was showing a cop friend of mine, and he thought it was a switchblade. I let him handle it, and he lit up like a kid at Christmas the first time he got the wrist movement down.
I also LOVE Ernie Emerson's stuff, but I can't yet afford another one. I did have a CQC7A (Benchmade licensed copy), and recommend it HIGHLY, but it's gone now (got kicked into a gutter during some social interaction).
CRKT has stuff I like, but Customs was giving them a hassle last I heard because they were considering liner-locks as "gravity knives," even though they come from the factory as biased to stay closed. If someone can update that, I'd appreciate it.
Semper Fi!
Ken Little