Quote Originally Posted by GlennSter
ngk for jap cars.bosch for eu cars.

actually, there is no "best" sparks for your car.just buy the manufacturer's recommended spark plug spec and you'll be fine.having a stock engine or even mild mods, you'll be better off with regular spark plugs.
Tama ka dyan chong. the best is still the stock, recommended ones... properly gapped. Just change them every 10,000km. If you want a little more performance, advancing the timing and using higher octane fuel may give better results.