Hi,
Have the following installed on my S4 B8 and 3 other family cars, has a good beam pattern which means it does not dazzle other drivers and works as a fog light. Never had an issue in very low / high temps, been a solid performer and expect them to last the lifetime of the car. They are a direct replacement, super easy to install and do not cause any error codes.
https://www.powerbulbs.com/product/philips-x-treme-ultinon-led-headlamp-h8-h11-h16
There is now a gen2 version of these bulbs which is rated 250% brighter.
All the best
Ed