I'm no expert, but doesn't electricity travel the path of least resistance? The plugs designed with numerous ground electrodes still will only fire on one of those electrodes at a time. The way I see it, the E3 design would actually shroud the spark, depending on how the plug is situated in the cylinder. I don't believe it will throw multiple sparks during a single spark event. I would think that indexing your plugs would work as well if not better than those other designs. Please correct me if I'm wrong.