[firetruck41]

BTW, I forgot to mention that I run with my headlights on at all times, though that only equals about 6-7k miles a year, they seem to be lasting as long or longer than I would normally experience sith stock type bulbs.

I have noticed no degradation, but that would be hard to notice over two years. I do know that I am still very happy with the light output I have at night, and am still impressed with the HIRs, every time I am driving at night. Glad to have Doug's experiment (mentioned in a post above) show, he couldn't see a difference between a new and old HIR.