NiteRider Minewt-USB
If you're still looking for a light, I can't recommend NiteRider products highly enough. The initial startup cost is around $100 bucks, but it's great to be able to recharge the battery using any USB port or wall outlet. Also, my NiteRider has made me a more popular night riding companion as my light is the only one that actually illuminates the road and our immediate surroundings.