Philips VisionPlus +50% Bulbs
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When I was doing research on bulbs, here was a reply I came across from Daniel Stern on another forum:
For reference, here's manufacturer data, from internal engineering databases, for output and lifespan at 13.2v for standard-wattage H1 bulbs. The numbers here are a composite of values applicable to the products of the big three makers (Osram-Sylvania, Philips-Narva, Tungsram-GE). Each manufacturer's product in each category is slightly different but not significantly so. I picked H1-type bulbs for this comparison, and while the absolute numbers differ with different bulb types, the relative comparison patterns hold good for whatever bulb type you consider. Lifespan is given as Tc, the hour figure at which 63.2 percent of the bulbs have failed.
H1 (regular normal): 1550 lumens, 650 hours
Long Life (or "HalogenPlus+") 1460 lumens, 1200 hours
Plus-30 High Efficacy (Osram Super, Sylvania Xtravision, Narva Rangepower, Candlepower Bright Light, Tungsram High Output, Philips Premium): 1700 lumens, 350 hours
Plus-50 Ultra High Efficacy (Philips VisionPlus, Osram Silverstar, Narva Rangepower+50, Tungsram Megalicht, but not Sylvania Silverstar): 1750 lumens, 350 hours
Plus-80/90 Mega High Efficacy (Philips Xtreme Power, Osram Night Breaker): 1780 lumens, 340 hours
Blue coated 'extra white' (Osram CoolBlue, Narva Rangepower Blue, Philips BlueVision or CrystalVision, Tungsram Super Blue or EuroBlue, Sylvania Silverstar or Silverstar Ultra, which is just a rebrand of the Silverstar product, also PIAA, Hoen, Nokya, Polarg, etc): 1380 lumens, 250 hours
H1 (regular normal): 1550 lumens, 650 hours
Long Life (or "HalogenPlus+") 1460 lumens, 1200 hours
Plus-30 High Efficacy (Osram Super, Sylvania Xtravision, Narva Rangepower, Candlepower Bright Light, Tungsram High Output, Philips Premium): 1700 lumens, 350 hours
Plus-50 Ultra High Efficacy (Philips VisionPlus, Osram Silverstar, Narva Rangepower+50, Tungsram Megalicht, but not Sylvania Silverstar): 1750 lumens, 350 hours
Plus-80/90 Mega High Efficacy (Philips Xtreme Power, Osram Night Breaker): 1780 lumens, 340 hours
Blue coated 'extra white' (Osram CoolBlue, Narva Rangepower Blue, Philips BlueVision or CrystalVision, Tungsram Super Blue or EuroBlue, Sylvania Silverstar or Silverstar Ultra, which is just a rebrand of the Silverstar product, also PIAA, Hoen, Nokya, Polarg, etc): 1380 lumens, 250 hours
Sil