Better than Osram's in my old Ford, Better Visibility and Safer than illegal Xenon's :),
Verified Purchase(What is this?)
This review is from: Philips X-treme Vision H4 Headlight Bulbs (Twin Pack) (Automotive)
I bought these bulbs for my old W plate Ford Fiesta mk5 as the main bulbs were a bit dull and very yellow (Osram 55w) after installing these I can say that there is a big improvement, light is far more white (not Xenon white however) and most importantly my vision at night is far better on dual carriage ways and Motorways.
As a note to anyone thinking of upgrading an old fiesta to HID Xenon's don't as I tried and the light is so bright that everyone flashes you (even on 35w bulbs) also the light from Xenon's flings in front and you lose side visibility as old ford reflectors are designed to reflect the light from standard Halogen Bulbs.
So for a far safer upgrade, these bulbs in my opinion are a much more effective and legal solution over standard h4 halogen bulbs, just don't expect Xenon white :)