Those who are often out riding off-road know how things on a trail can change on a daily basis. A few pot holes here, a log over there or a low hanging branch just waiting to make acquaintances with your head are all things you have to watch for. However, when it is dark, your chances of seeing these obstacles are close to none, so it is vital to have good lighting to show you the way. For the best results, many riders choose a high-powered helmet light. The only problem is, which one to choose.