I am seeing more and more iridium plugs on the market. Knowing it is rarer than platinum (in plugs at least), it is still priced cheaper than the plats.

I am "told" by some local fellow gearheads that they use irids because they are more heat tolerable than plats. The majority of these guys run juice too so maybe they are on to something. If there is any shred of truth to this, I just dont't see the S/C generating that much more heat for plugs to need, heh. *shrug*

Regardless, I use NGK Plats. Seen them anywhere between $8 - $12.