We ask this final often overlooked question for one simple reason; you may need to compromise on light power and price tags so you can afford two lights. If you plan to ride fast, winding single track, lots of downhill, or if you just plain want to be as safe as possible while riding at night, it's a good idea to use a helmet light. While a bar mounted light illuminates the path directly in front of you, a helmet light allows to you to look further down the trail to anticipate bad terrain, sharp turns, and heavy braking. Essentially a helmet light allows your light to follow your eyes around corners!

Do this: During your next day ride, take a moment and imagine you are riding at night. Notice where you eyes look, how they scan the terrain, anticipate turns, and how far down the trail you need to see to brake safely. Take that in, and then realize that without a helmet light you won't have any of that extra vision during a night ride. Maybe it's ok for you, maybe it isn't?