I've been running Autolite in every vehicle I've owned since the 70s.

Trivia:

"Champion" is the moniker of Albert Champion, who is the pioneer of the modern day configuration of the spark plug. "AC" [as in A C Delco, as well] = Albert Champion. GM plugs?? Or, Japaneese plugs or Ford [ne - Autolite]?

I like the Autolites for longevity and anti-foul.