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Have had issues with duff new NGK (possibly fakes) but 3am could not sleep navel gazing. Over the years have used champion but reading up there are quite a few people who had a high failure rate. Then the berating of bosch spark plugs. normal single electrode. I liked the multiple electrodes as they lasted about 4 times longer than single electrode plug plugs.
Denso won, as the mk1 Mr2 ran better with the correct denso plugs over the incorrectly gapped ngk ;) But reality is what the factor had 4 Denso and only 4 ngk that looked like returns as the boxes were opened and had greasy finger marks.
I run NGK in everything pretty much.