My preference for Champions probably lies with my choice of daily driver.
I have never ever owned a car or truck of any other brand besides Chrysler Dodge Plymouth and Jeep. and I remember even my older brother with his 74 Charger and 76 Duster back in the 80s. ... he wouldn't listen to Dad and me, and bought AC's. He then could not understand why he had a whine in his radio. Suppression wires and AC resistor plugs even, "nah can't be the plugs, they're new, brand of plug don't make any difference". He would finally change the plugs to Champion the next time they were due and mysteriously no more radio whine with the engine running...
(Dad having bought a set of champs and having a set of spares in the workbench drawer that he could grab for free helped. this back in the day when you'd get the Champion resistor plugs for a buck a piece on sale...)
I never went for gimmick plugs like E3s or split fires. waste of money. Bosch makes absolutely the worst spark plugs money could buy. If I cannot get Champs, my next choice would be Autolite.
when I work on someone else's car I put back in what was stock... Delco in a GM, Motorcraft or Autolite in a Ford.