[Gravija]

I am going to change my spark plugs because upon startup on cold days, the car just dies unless I hold down the gas for like 15-30 seconds.

I searched and came up with using the NGK PFR6B-11 or PFR6G-11
One poster mentioned however using spark-plugs.com that there are iridium plugs, are these better than the platinum plugs?

Would I be able to use them in my car?

Thanks