Crapdealerbob,
I saw your review, and it added grist to my mill. It was great. Thanks.
One of the "features" of the Denali/VisionX is the built-in pulse width modulator, to drive the LED at less than 100% and for thermal management. I'm not sure its worth the upcharge to the lights Frankenduck noted above, which look to be about the same as the D1. On the downside, I'm not sure how the PWM of the lamp would work with the Skene or Kisan controllers, which probably use the same technology. What happens when you put a PWM in series with a PWM? I've got no idea.