I use a MiNewt, originally 150 watt, upgraded to 200 watt when I had to replace the head unit. Now they have 250-350 watts for the same price. Love the nice wide even spread of the beam. I prefer a headlight on the bike and another on my helmet so I can direct light where I want it - into the woods around the bike path to look for animals, around a corner before I turn, at a car to make sure I've been noticed. I have a Vis360 helmet light which provides both a blinking rear and 110 lumen front light. I've very happy pedaling in total darkness with both lights, either light alone is OK if there are streetlights around.