I always carry a Swiss Army Knife (sak) and then sometimes add a Delica or PM2 or throw a Leatherman multi-tool in my jacket pocket!
When I was a kid, most of the boys had some variation of the Herder pocket knife. But back then, a knife was just a knife, so I've never looked closely at the brands and types.Spyderco here most of the times./
The best knive that's always sharp is my Robert Herder Taschenmesser.