Which spark plugs for a Mk2 16v

Hi does anyone have any recommendations for spark plugs I've always used bosch super 4's on my previous two 16v's apparently these tend to cause arcing inside the dizzy cap which i have to admit I did used to get, I've currently got Bosch superplus plug's in at the moment but even after checking the gap's the car has never felt quite right since fitting them, are Iridium plugs worth the outlay as ideally I don't want to fork out 40 odd quid on spark plugs

 

When running a 9A (Corrado 16v) I used the Bosch Super4 without issue, then changed to NGK BKUR 7ET again without issue.

The NGK site below lists the BCP 7ET as standard for the KR 16v and BKR 7EIX Iridium as an upgrade.

I buy my (non VW) Iridium plugs from Driven2automotive as they are half the price of some others, see link below for yours ... 27.44 delivered.

See also `other` link for price comparison to standard plug and Iridium.

I was recommended NGK by a guy that worked with Champion

Apologies for the `essay` but ... use Iridium !!!

http://www.ngkpartfinder.co.uk/car_...model=GOLF%20MK2%20%2884--%3E91%29&engine=1.8

http://www.driven2automotive.com/se...ay=desc&search_query=bkr7eix&submit_search=OK

http://www.gsparkplug.com/shop/ngk-bcp7et.html

 

What? I'd love to hear the theory behind that. Sounds very made up to me. lol
Probably from someone who thinks a four-electrode plug gives four sparks.

 

I run NGK BKUR 7ET in my race car.. They're are more than adequate! Iridiums are overkill IMO..

 

I use BKR 7EIX Iridium all the time , and up the to 8's when running on the NOS