which plug is better

Iridium alloy is 6x harder and 8x stronger than conventional platinum and can handle temperatures in excess.  The Result: Increased horsepower and decreased voltage requirements resulting in fewer engine misfires. of 4,000 degrees Fahrenheit.             i would say looking at this web site Iridium is much better

the splitfire/multi-contact point idea is total bull if you want my opinion on that one.think of this from an electricity/physics standpoint.one anode, and two contact points? then they try to tell you the spark goes to both of them giving twice the spark?bullsh*t.electricity travels the path of least resistance. This means the current or spark, will travel to one or the other of the two tips, and the more it does so, the more it will continue to do so as one point becomes a better conductor than the other. This in my opinion actually reduces a good contact arc.stupid idea made to sell things to people with no clue about electricity.single-point plugs are the way to go. platinum or better, and NGK has always made good plugs.-GlassWolf

Pioneer Stage-4, Orion, DynAudio, Fi