An addition to the above post: When I first got my generator setup I wanted a Cyo/ Edelux, Supernova to go with it, but couldn't afford it. I tried numerous battery powered lights and two other generator lights (Shimano's halogen and dual generator version of the PB Blaze light). It was all a waste of money when I should have just bought the light I wanted in the first place. The Single Cyo is a lot brighter than dual Blaze's with a better focus of light for actual riding.