i paid £55 for a pair of PIAA super white bulbs , the oes that are rated at 55/60 W and give a light output equal to that of a 100/110 W.
yes they were a whiter brigher light, but still didnt actually light up any more area, thats down to the design of the headlight reflector. i had them in my evo 6 as the std headlamps are very poor due to the small size. i had them in that for 6 months, then in the cossie for 6 months and i kid you not, both failed within a week of each other after about 12 months use.
ive never had a headlamp bulb fail before or since, lesson leant