Anyone tried these

https://www.autobulbsdirect.co.uk/d1s-osra...ation.html

I personally prefer a 6000k colour temperature - I find it much less straining on the eyes at night, and is the typical colour temperature used in most modern cars.

Osram are good though and I had no complaints from these bulbs. I paid £65 for a pair, so if you search ebay you may be able to find a bargain.

OSRAM XENARC COOL BLUE INTENSE D1S HID Xenon discharge bulb, discharge lamp, 66140CBI-HCB, duobox (2 units) https://amzn.eu/d/aRacfC5 2015 Range Rover Autobiography 4.4 SDV8

Thanks for the advice Gary

Do HID bulbs suffer reduced output with age/ use? My experience with stock halogen nightbreakers is that the beam was just more narrow and focused therefore longer and brighter where it illuminated the road but the total brightness / light output is identical. For safer driving a narrower beam may not necessarily be better. 2012 TDV8 Vogue (L322)