I used a cheaply Planet Bike light for general city commuting that cost about $20 including taxes at Mountain Equipment. The thing lasted fives years and just used recharable batteries and I would still be using it if I didn't leave it in the shed over winter causing batteries to leak. For nighttime off road bicycle paths been using a Cygolite dual cross it is just like daylight only downside is about 4 hrs of battery life vs 30 on a replaceable battery powered led.