Holy Smokes there are some incredible collections in this thread.
I have a SOG Navy Seal fb and a Spyderco Endura Clip-It that I have a LONG history with so will never leave me. I don't usually use them anymore though.
These are the knives that I used to own:
Dpx HEST 2.0
Jim Burke Runt
Benchmade 615 mini-rukus
Les George VECP 1.5
All of these are now gone. Everything has boiled down finally to this:
Trinity by GermoneGold, on Flickr