Well here's the thing: There are different needs and different plugs. Keep apples to apples and so on. Across the board, all things equal, I would say I like Autolites for autos, and NGK for bikes/snowmobiles. Plugs have different coating like Champion, so they won't rust as fast if that is an issue. And you can get specialty plug like fine wire electrode which spark better at idle and don't foul, if that is a problem.
I have tried all plugs over what 30+ years and have stayed with Autolites in my dragcar and a MSD7AL-3 box with good results, but I've tried them all - BOSCH plugs are pretty good too.
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Today's Featured Article - A Belt Pulley? Really Doing Something? - by Chris Pratt. Belt Pulleys! Most of us conjure up a picture of a massive thresher with a wide belt lazily arching to a tractor 35 feet away throwing a cloud of dust, straw and grain, and while nostalgic, not too practical a method of using our tractors. While this may have been the bread and butter of the belt work in the past (since this is what made the money on many farms), the smaller tasks may have been and still can be its real claim to fame. The thresher would bring in the harvest (and income) once a y
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