So, far so good. The Beamtech H4 is not overly bright but definitely an improvement over the stock H4. The light quality is excellent, pure white without a green or blue cast and matches my daytime running leds perfectly. I feel and see first hand that I am definitely much more visible with that head lamp. I typically keep it in highbeam during daytime, and car drivers take notice in their side mirrors... The beam pattern in both, lo and hi beam is clean and at a proper height. I test rode the light at night and haven't got any flashing from ongoing traffic. The lamp is quite compact and appears to be very well built and sturdy and what not to like about a fanless design, great idea! I could have done a better job cutting the rubber boot to accommodate the lamp as you can see on the photo. I reordered a new boot and will try not to cut it, I think it may fit over the lamp. In that case, cooling may be a bit compromised but we will see, I still have a spare as a backup... Price is great.