Resistor VS non Resistor spark plugs

I run a E curve dist and a 7al box and always use NON resistor plugs. Have no problems either, well on AM the radio has some noise but who listens to AM radio, lol.

How I see it is the higher the voltage has to be to fire the plug, the easier crossfire can happen. Higher voltage can jump/travel easier. Why those high voltage power lines are up so high from the ground. Also when voltage goes up, current goes down. Ohms law, so the lower the voltage, the more current discharges..means a hotter spark.