Originally Posted by
alan s
Best to go with two lights up front. One on the helmet and the other on the bars. I have the Cygolite Expilion which comes with mounts for both places. Light weight, so no issues on the helmet, and very bright with great run times. In rain, snow, and fog, a helmet light reflects too much light back into your eyes, so you want to have the option to move to the bars.
I agree with the two-light system. You are also more likely to be seen. If those around you don't see one light, they will likely see the other.