i'll agree with this, i was running 100w Philips Rally H1's in my low beams and 100w Philips Rally H3's in my high beams untill i was warned about the low beam reflectors in my model XR8 not liking the higher wattage lamps, i switched to Philips +50 H1's, didnt notice any difference in light output
running IPF 130w H3 lamps in my high beams..... not much better than the philips lamps.....

