I have Niteriders 900 boost. It's more than ever needed. It's only plus for me is run time in winter temps. I like their Micro series better as they're small to carry and run for hours. I use a 600 on the bars and 350 on my helmet. I'm comfortable riding dirt trails in the forest with that setup as well as fast road downhills. On roads, a helmet light helps to be seen as you approach side traffic. On dirt trails the helmet light is a must. I've owned 5 Niterider headlights and all were dependable.