The new NightBreaker bulbs are not quite as good as the Philips Xtreme Power in terms of raw light output, but the difference is almost unmeasurable and certainly imperceptible in terms of actual headlamp performance. The Osram Night Breaker has areas of blue glass which take away from your seeing performance, rather than augmenting it as the promotional material claims?so-called "whiter" light created by blue filtration like this does not help you see better?so purely on performance, the Xtreme Power wins. Both of these bulbs have the best available output from a standard-wattage bulb, and a short lifespan
(no free lunch). For stock or near-stock wattage bulbs in headlamps, the best beam performance comes from the following bulbs:

H1: Philips Xtreme Power

H3: Narva Rangepower+50

H4: Osram 70/65w +50

H7: Osram 65w

H11: Substitute H9

Best-pick differs for other applications (fog lamps, etc.) and I don't mean to say the Night Breakers are bad bulbs, it's just Osram kind of got painted into a corner by Philips' minimal use of blue glass in their premium Xtreme Power line, and figured they had to make a bulb that looked significantly different to avoid a "me too" perception, so they cast their lot with larger use of blue glass and revved up the hype machine about "whiter" light.

As for the various "plus" claims (+30, +50, +80, +90, etc.) keep in mind how they're devised. The plus-numbers cannot be attained simply through greater luminous flux, because of flux and wattage restrictions contained in bulb regulations prevailing worldwide. The "Plus" bulbs do produce near the maximum allowable flux but that's obviously not the whole story. These bulbs have higher filament luminance and give better beam focus because the filament coilitself is smaller. Headlamp optics are calculated based on a point source. The smaller the filament, the more closely it approximates a point source, and therefore the better the focus of the resultant beam pattern. The better the focus of the beam pattern, the higher the beam peak intensity (that is, the brighter the "hot spot"). Depending on the particular bulb and the specific headlamp optic in use, the gain in hot spot intensity can indeed be up to 50% (80%, 90%, whatever) at some specific but not uniform or predictable point in the beam. In practice, that means once Osram or Philips or whoever have designed their newest bulb, they throw the nearest convenient intern in a room with a bunch of headlamps and have him photometer them until the one that gives the single greatest increase (at any point in the beam!) is found, then they give the intern a food pellet as a reward. Tungsram called their 2nd-generation upgrade H4 "+60" either because they were lying or because they found a headlamp for a 1983 Tatra or something that had 60% more light in one particular spot. That doesn't mean the Tungsram "+60" H4 was better than the "+50" bulbs from Philips, Osram, and Narva?it wasn't! So, those "+30" and "+50" and "+80" type numbers are not necessarily a trick or a scam, it just doesn't mean what most people assume it means.

As for the blue glass, here's a refresher on the science:

There is no magical blue absorption filter that somehow blocks less light than other blue absorption filters of the same colour
characteristics. All of the extra light from the "plus" bulb construction and then some is stolen by blue filter glass, whether the blue filter is made by Philips or Osram or one of the less-reputable factories.

Filament bulbs that have been filtered to produce "whiter" (colder/bluer) light colour, and which comply with DOT or ECE regulations, can be classified in two categories:

A) The kind that produces less light than an unfiltered bulb and has rather a shorter lifespan

B) The kind that produces almost the same amount of light as an unfiltered bulb and has an extremely short lifespan.

There are no "extra white" filtered bulbs that produce identical lumens to an unfiltered bulb and have the same lifespan

Glowing filaments produce a great deal of light in the red-orange-yellow-green wavelengths, and only very little light in the blue-violet wavelengths. To put very rough numbers on the matter, suppose that a 9006 bulb produces its nominal 1000 lumens, of which 250 are red, 250 are orange, 250 are yellow, 175 are green, 50 are blue and 25 are
violet.

good day! i'd like to comment sa dalawang bulb, xp and nightbreaker, nagorder ako sa powerbulb ung tig isa na philips xp and osram night breaker, both tried it on my patrol headlight left and right comparo, looking in front of the vehicle, the night breaker is more whiter, but, when visibility while driving at night, i'd say xp gets my vote... ung night breaker ko, ginamit ko nalang sa daily drive ko around the city. and ung xp ko nilagay ko na sa patrol for long distance driving.
 

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