Which plugs are best for performance?

V=I*R

I did check some champions of the same type that were old - used, Ohm readings were all high in the 15 to 20 Kohm range- that's what lead me to checking and comparing new ones. Less resistance and consistent are good things when it comes to electron flow. When i put in the ngk's the car that had the champions - it starts faster and has a more even idle character

Any plug will work, but I think ngk's are likely to work better. IMO.