Which spark plugs are proven to be the best for a rev3 na? Only had my 2 a month now and serviced it almost straight away using plugs I thought was ok at the time, Bosch Super 4( the ones with the 4 bridges to the centre electrode).

I did a little searching and I've discovered a few reviews that say these are poor, especially for jap cars.

I've since put the old ngk platinum plugs back in and all seems ok.

Are the reviews on the Bosch plugs correct?