I am looking for the best (brightest) light for the best value. I ride a roadbike approximate 30 miles round trip to the office 3-4x a week. Most of my route is bikepath or bike lane (awesome) but I do have some parts where I am on pretty bust streets. I generally leave @ 6:30 am and come home at 5:30 or so, and it takes me an hour. As the days get shorter I can see the need for a "real" light, and would like to start shopping.