My three SAK's.
I've been carrying a SAK pretty steady since 1969, and it's one of my very favorite pocket knives. A SAK is mope than a pocket knife, it's a pocket size solution to those little problems that life likes to through in our path.
The fit and finish on a SAK is second to none when it comes to predictability. It's the one brand of knife that I can fly someplace, stop at a big box store and buy a SAK, and I know that odds are it's going tone exactly like any other SAK. No thumbnail busting springs, it's going to be very sharp and ready for use, and not cost a lot so I can gift it off when I fly home. For many years now, the SAK has been my go-to travel knife when flying. No matter where I go, I know I can have a good knife on me.
I love my tinker, I adore my old Wenger SI. But my favorite SAK is the little classic in the keyring sheath. It's been everywhere for the past twenty years, and it's felt with small flat and Phillips screws, snipped things with the scissors, and the tweezers has felt with in infinite splinters and other things. I used to think the tiny classic was a joke, but it took my better half to show me that I was very wrong.