MSD wish sparkplugs?

most people seems to like NGk pluggs better have asked some and had the question up here to now soo i gues i will go for ngk but the closest place that sells sparkplugs dont seem to have any idea´about msd iginions, should i go for resistor type pluggs or standard copper ones?
lots of questions:(

340 mopar fortunaly i dont have that nice problem with header plates you have so i will go for standard size hex for easier maintaninance without buying another deep socket;)