The $1000, 1400 lumen Lupine Betty as bright a light as you can buy these days. It’s been available from the parent company in Germany (Lupine Lighting Systems) for a while but they’re just rolling in here in the states from Gretna bikes. This is an incredibly bright light – 22 watts max if you’re stacking up against headlights – light a patch of sunlight on your path all night long.