The Magna Headlamp FAQ:

[taniagirl]

Overwattage globes, draw too much current, you will risk heating something up too much.

If you can still get Osram Nightbreakers they are the cheapest way to get decent light.

Osram night breakers are the same as the Narva's

[vlad]

Yep, Tania is right. Osram in Europe is marketed as Narva here in terms of automotive lights.

[peaandham]

Osram night breakers are the same as the Narva's

Yes I know, but normally can be had cheaper under the Osram brand.

[bb61266]

Will try a Narva upgrade - I have been pleased with their results in the past