I just bought the AC Delco's, DAMN, cost me 40 bucks. These things better be the best damn sparkplugs!
My step dad was telling me how much he hates NGK, he had one on his snowmobile....he was doing 70 and 1 of the plugs shitted on him. Then the NGK plugs in his snowblower were shit. Im hoping you guys are right when you say they are good