So... where to start?

[Joe Dirt]

General consensus is that the Motorcraft and Autolite companions don't have anyone writing back in 6 months to say they had to change out their plugs...

The Iridiums aren't bad, I had them in my SHO, but I don't know of anyone on here that has had a problem with Motorcraft replacements- they just work.

 

[JTH1972]

I'd probably go Autolite, as the only place I can find Motorcraft plugs here is from the "stealer", and they want as much for one of their plugs as I can pay to get an irridium plug.