I have the Dinotte 200L lights -- one for handlebars, one for my helmet, and I LOVE them. They're insanely easy to install (just snap the o-ring around the bars and they're on!) and the run time is great. I used them for a 24-hour race and they were amazing. Not blindingly bright, but more than sufficient to light up the road about 20 feet ahead. I keep the helmet mount pointed down to light up right in front of my wheel.