I've carried many models of Victorinox, in a few different colors, and two models of keychain Leathermans.
I also carried a few of the Victorinox ones with USB flash drives, and made a multitool Linux distro for them: https://www.neilvandyke.org/lildeb/
If you want a keychain multitool with pliers, the Leatherman Squirt PS4 is great. The corners of the Leatherman Micra destroyed my pockets, but the way the handles fold in that model means it's relatively better for keeping the blade from closing on your fingers if you're abusing it. These things are pretty tough, and I once used a Squirt in my fist to urgently hammer in the hinge pin of an old metal door
I occasionally pine for one of the Victorinox RescueTools, which can be used to rescue someone from a car, or to escape from one yourself. They're a bit big to carry around all day, and I don't have a practical need where I live. They're also expensive to lose, if you get forget to leave it at home before a flight.