Wah, next time try NGK la. See how.I only tried Denso iridium before, because of the 0.4mm tip. First set lasted quite long but when car started to jerk, then change to 2nd set. 2nd set did not last long as one piece the ceramic chip off, then back to platinum due to costing.....
Denso easier to source for me. Never bothered, I don't think its that big a difference. But if both NGK and Denso is in front of my face, I choose the cheaper one. If both same price, i choose NGK.Denso easier to source or your specific model of Denso is easier to source.
Never used Denso on my cars, so far only NGK stock, platinum, and Iridium. Now only on stock replacement. Last time (very long time ago) i buy a set of NGK platinum for RM40 and NGK Iridium for below RM100. i buy from distributor.
I have used Denso before on my EX5....didnt notice anything different in term of reliability.