well I have to report that after my first actual night ride using this light, I'm absolutely thrilled with it. Ride time was probably close to 2 hours, and temps were in the upper 40's. I started out with the light on medium for the first half of the ride, but then cranked it up on high on the way back. I keep it aimed down towards the road to keep the hot spot out of oncoming drivers' eyes. Great light, couldn't ask for anything more, except maybe a second light on my helmet.