Last year when one of my headlights kept going off, I purchased what were supposed to be Osram Xenarc 5000K bulbs and put them in. Sure enough, year and some change later, one of the headlights started going off again🙁.
Being a cheap sob - back to eBay - this time went with supposedly German made AGT 5000K bulbs - whopping $25 for a pair. Just replaced the faulty one - seems to be working ok, but the light output doesn’t seem as white as the “Osram” - probably closer to the OEM 4300K. Might have to change the other one as well. Oh well - good thing it’s only a 15 min job.

^^^ This. It’s especially easy when you take the wheel off...