Originally Posted by noglider

But having said all that, my favorite headlight (among the many I own) is a dynamo-powered on that is bolted onto the bike. Oddly enough, people don't steal it. And it comes on whenever I roll the bike. I leave it on during the day. It doesn't flash, which is a shame, but it's OK. It has a shaped beam. The light isn't amazingly bright, but it's bright enough for me. I've received compliments on how clear and focused it is. It does illuminate my path so I can see, and it does a fantastic job at helping me be seen. Busch & Müller makes my light, and they make a ton of models of dynamo-powered headlights, all with shaped beams.