Which is better NGK or Denso Spark Plugs?

Related questions

1. What is the normal spark plug gap?
2. Should you use anti seize on NGK Spark Plugs?
3. Does spark plug gap make a difference?
4. How do I make my spark plug gap smaller?
5. How much should it cost to replace spark plugs?
6. Is Anti Seize needed on spark plugs?
7. Are Iridium spark plugs better than platinum?
8. What is an NGK?
9. Does anti seize affect torque?
10. Can a loose spark plug cause damage?

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