I've only had 1 ride with the light, so the review is preliminary. I rode to work in the dark on Friday morning, when the light was driven at 350 mA. At that power, it obscured my wife's 15W halogen almost completely. Compared to my HID, the beam is not as focused, with more spill to the sides. There's also less of a hot spot. So far that's a good thing, since I pick up more things at the side of the road than I did before.

I'm glad I went with 4 LEDs. The housing worked out really well as far as weight. It's about 1/4 the weight of the Trailtech. If/when I make another, I'll use a bit more aluminum for heat sinking, but keep the design similar. In terms of the light temperature, it's not as blue as the Trailtech. I'd say it's really close to my car lights, which are 4300K HID. That's pretty much ideal for me.

If I run two of these things with two separate battery packs, I'll be at 1200 lumen for ~$400 and a total weight of about 1000 grams. In a year, I'll probably be able to build a system that would run at 2000 lumen for the same money and weight.