For commuting I have a home made 200 lumen LED light that I point about 20' in front of me, and I have another home made LED light on my helmet with about 150 lumen that I can point anywhere. Between them it has enough spill that I don't have much issue with road hazards and can see far enough ahead to feel comfortable going 15mph. The helmet light is nice to see where you plan to go versus where you are pointed. I also have a 10/15W Halogen I can kick on as needed, it adds a lot of light, but the run time isn't great, so its mostly at intersections or times when I am moving fast enough to outrun my LEDs or other situations where a little more light is useful.