The dimunitive, unheralded, unassuming, understated, and altogether unappreciated SOG Blink is the best knife I've ever owned. It's small and flat enough to be carried in any situation, be it work or play. As a carpenter's companion, it's second to none for sharpening a pencil to shaving wood or cutting rope; as a hunter's buddy, there's no game on the North American continent that it can't gut; as a defensive tool, well, if we are being honest, it is something that most of us will never needin a lifetime. A drop of Rem Oil with teflon in the action, and it's faster than lightning to deploy one-handed. It was my first assisted opening knife, and I haven't purchased anything other than AO knives since.
I like collecting knives as much as the next guy, especially SOGs, but if I had to own only one, it would be the Blink.