Spark Plug & Coil Packs

Whats going on guys, im looking into changing my ignition packs & spark plugs. I’ve seen a few videos regarding this and alot mention to use OEM Hitachi packs but go for 133 per Pack while NGK Go for about 83. I wanted to see if anyone had experience with using NGK Ignition packs or NGK Ruthenium spark plugs?