Spark plug suggestions

I used to like Autolites until their production was moved to China and quality went in the dumper. It took losing two catalytic converters on two cars before I got it thru my thick skull that Champions are junk. Get a Champion and an application-equivalent NGK, hold one in each hand and compare them just physically; the difference in quality is plain to see. I have never had a problem with NGKs, but if I couldn't get them I'd use Densos.