H4 globes, Cool Blue, bright white etc

I haven't done a comparison with 55/100's but I replaced the lamps in the car with 55/60 +50's Xenon/Halogen. The same watage but 50% more output compareed to standard lamps.
The result was a marked increase in light. The light is much "whiter" with a slight blue tinge.

The globes you are talking about do give more light at less wattage only as an illusion because of the colour temperature. These globes don't do much if the weather is foggy or wet because of the colour temperature. In wet or foggy conditions a warmer colour temperature will give you better results. When I say warmer I mean toward the yellow side... not bright yellow but an "incandescent" yellow, too warm & you loose visibility. Note how in foggy conditions you can see someones yellow blinkers but their red tail lights fade? That is because of the bandwidth of the yellow light. It's a compromise really, I had "white" globes in my Jack but replaced them with "All weather"...

Here's a great site with a wealth of information on lights, bulbs and all lighting products.
daniel stern lighting
Regards Andrew.

I bought a set of replacement bulbs (white light) at the Philipps stand at the last 4WD show. They are the same specs as original (GU III ST-L Patrol) so no HD wiring loom is required. I also replaced the bulbs in the driving lights.

I am most impressed. Philipps claimed a 50% increase in light. They had a display showing all of the options and as a result and after discussion with the expert I went for the white rather than the blue. (He seemed to think that the blue was only for the boy racers wanting to sex up their NISMOS etc). The display also included a table indicating approval or not by Road transport Regulations! From memory the higher rated ones, including the blue lights were not approved.

Country driving is now a pleasure on high and low beam. The original Nissan equipment is very yellow in comparison. Total cost for 4 bulbs was $70.00. Fitting was easy except for the LH main which is a tight squeeze for your hand/arm.

This is the cheapest and best mod I have done.

Kings

I have the Philips Crystal Vision 4300K Globes, they seem less bright around the City due to all the other lights around, but when you get out onto dark country roads they are much better than the normal globes the illumination on objects is way better than with standard globes.
I have also used the Blue Vision, which is one below the Crystal Vision globes they are also very good and I feel are more of a all wether globe.

I bought a set of Philips 50+ globes for my Cibie oscar spotties. Although the light is whiter than before, they do not shine as far down the street.

I took them out and my mate has put them in the hi beam of his 80S cruiser, he loves 'em.

I have since put 50+ in the headlights of my 2000 GU and found them to be very good.