Originally Posted by JimBeans83

The Magicshine is a powerhouse that uses an average reflector and a lot of power. That equivalent power isn't available from the dynamo, but this is made up for with very good optics from those three offerings and also the fact that the magicshine and other cheaper non-bike lights are symmetric output so immediately 1/2 of their claimed output is lost by going up where it does nothing to help you see the road.