Hi all just had new spark plugs fitted NGK Iridiums, and the guy who fitted the said 2 of the coils didnt click on because theyre old (though they ARE working) So Ive looked about and they seem to be about £50 each. I did see a full set of 4 from america for about £100 delivered. Should I go OEM for full price or cheapos from usa? Are there any that are better than OEM? Any advice appreciated - Cheers