mga experts gusto ko sanang magtanong kung ok ba gamitin yung mga platinum/iridium sparkplugs, i'm currently using ordinary Bosch sparkplugs, i'm considering, BOSCH Platinum 4, denso iridium or maybe bosch super 4

-what are the pros and cons in using these aftermarket sparkplugs (fuel consumption, response etc)
-is it worth the extra cash spent.
-what brand do you recommend

my car is a classic 85 mercedez benz 190e w201 2.3l fuel injected engine