Originally Posted by alan s

Try a helmet mounted light, and you'll see the great advantages. You can point it where needed at hazards and around turns, get the attention of cars, and the weight of is negligible. My Niterider Lumina 700 sits on top of my helmet, is perfectly balanced, can be aimed higher or lower with a ratcheting mount, and weighs 172 grams including mount. If I had to choose between mounting on the helmet or bars, I would choose the helmet every time. The only time it is bad is in fog, snow or rain, when too much light is reflected back into your eyes. Then it goes on the bars with the other light, or in my bag.