My "collection" consists of about 25 knives. 1 Buck (110), 1 Spyderco (Love my Tenacious), 5 Gerbers, 1 Benchmade, and 2 Case (One Brand new that I just had to have and an old one that is broken when I'd love to have fixed if I could). All the rest of my collection came from flea markets, garage sales, antique stores, and old trunks I found at different family places. The majority of those knives are: Ulster, Imperial Schrade, Imperial, and a bunch of little Kamp King pocket knives. I find them, clean them up a little and see if I can make them look cool.
My dirtiest secret: My favorite even over my Buck, Spyderco, and Benchmade is my Imperial Schrade Old Timer 50T.
Not sure if that's really a "dirty" knife secret, but there ya go.
Gray