LOL ... if you really want a kick in the gut, most of the Delco ignition stuff is made by Wells, the same company that makes all of the AutoZone crap! Although ... I feel certain that Delco requires stricter qaulity measures than AutoZone.

Denso makes some excellent plugs, but for the money, there's a better bargain to be had.

Motorcraft has good quality parts as well. I would only use them on a Ford though, but that's mostly the only thing they make them for.