The projector dipped unit in the THQ lights allows you to fit HID or LED and get a proper cut off so if you're wanting more output than a standard filament bulb those are your best options (though not legal) From all the photos posted on this thread there was one from amv with 35W HIDs fitted which in my opinion gave by far the best coverage.That's a great explanation @Mooncat thanks for that.
So, what would you consider as the best option for replacing the candle power of the H4's?
A good LED 'lamp' set, an original H7 unit or one of these LED units from THQ/travellinlite?
I'm running GE +130 bulbs in mine and they are absolutely fine but you really can't compare them to the retina burning proper LEDs that are factory fit.