Spark plugs

[john adam]

Greetings from the Antipodes.
I have finally decided to replace the spark plugs on our 2.5 V6 after 230,000 kms, not that there is any pressing reason to do so, although the central electrode looks a bit worn down . The original plugs are Unipart type GSP66527, I understand that the NGK equivalent is a type PFR6N-11 platinum plug. Unfortunately down here they are over $NZ45 (20 pounds) each.
What is the best plug?

[Lord of Hog]

I put half a dozen NGK3764 Iridium-tipped in mine the other week. They cost about £8 per plug in the UK but at least I have the pleasure of knowing that, barring major mechanical failure, they'll outlive me. At the sort of prices you're looking at maybe it would make sense to have some shipped in?