OK, about to replace my spark plugs. Anybody got anything to say about replacing them with Iridium. Pros, cons, Is it worth it in your opinion?

Thanks for the help.

 

I read on these forums that they perform better for the first couple of weeks and then they run just like platinums so not worth it. Most people just go for platinums, but I'm going with copper.

Copper replacement every 30k, cost $2x6=$12 (NAPA Auto Parts)
Platinum replacement every 60k, cost $37 from eBay (~$10 each in stores)

Copper is way cheaper