I use a Shimano hub generator, Lumotec headlight, and B&M Standlight (rear). It is vastly better than the small battery headlight systems, and is more than adaquate for my commute. Obviously, a high-capacity rechargeable system is brighter, and, depending upon your requirements may be better for you. Presonally, since I could never put up with the inconvenience of having to charge batteries, a hub generator is the only solution for me.

Paul