NGK is the plug of choice for japanese cars, with Denso being the second choice.
That said, I have had great success with Autolites, and use them on my ford with COP ignition. Car came with double platinum plugs from the factory for "long life", but with regards to performance copper is still king. So I use autolite coppers on my car, and change them every 15-20k...I don't usually inspect the gap during this run, but when I pull them off they are ok. Stock gap is .55, but I run .60 on the recommendation of a good engine builder with knowledge of the Duratec i4 engines from ford.
I still have my factory plugs laying around somewhere...they were in good shape when I yanked them at 40k. I wouldn't of wanted to leave those in for the full 100k, would have been a [censored] to get them out. IIRC, Motorcraft plugs are autolites...at least in some instances. Autolite double platinums are specced as a direct replacement for the factory plugs on my car.