I'm using the Stanley H4 now, the voltage is good but I'm not wild about the light pattern. Maybe spoiled by new car headlights but I also have a Bosch H4 The fluting in the Bosch lens favors one side while the Stanley looks symmetrical.
I haven't checked the watts yet in either one so maybe I'm putting the cart ahead of the horse.
Anyway has anyone used both and have an opinion or should I do the test and report. I also have a couple sealed beam bulbs, one halogen but it appears to be for a car.
Edit, going in a windjammer 3.