HEK

well my hat's off to those with over 100K on their rides...I have 40k and have owned Hondas that have gone over 300k using the plugs suggested by Honda...so I'd say go with the NGK's

Turbonut

iTrader: (1)

Never changed the plugs in the TL, but the daughter had 135K on the OE NGK plugs when I changed them last year and the car was running fine.
As I need to change the plugs every 7,000 miles max in our modified RX-7 Turbo, back in 2002 I thought I'd try the Denso Iridiums, but with only 670 miles the trailing no.1 plug stopped firing.
The car has always had a diet of NGK's, so I returned the Denso's, got my money back and have never had a problem since with the NGK.
It may have been a one shot deal with the Denso's, but it was enough to deter me from ever considering them for replacement in any vehicle.
Stick with OE plugs!

braknboyy

If any body cares... the guys and I at the shop tested like 5 diff. plugs... The more prongs the worse... full is sprayed on top or at an angle at the plug... the more metal-the worse fire.. full was hitting the top of the prong and running down.. with one prong.. you have a lot better chance of clean ignition.. the worse was the platinium 4's.. ... bad news! split fires weren't too bad... but at the wrong angle.... it was just as bad as the 4's.