I am looking for a good, relatively inexensive handlebar mounted light for daily commuting on dark bike trails and city streets. I have used a Nightrider Trail Rat, but the batteries go out after a year or so and cost over $100 to replace. The Nightrider LED light set is over $300 and does not even make coffee. Also, how does one compare lights rated in lumens with lights rated in watts? Seems to me all should be rated in lumens. I have heard talk that some LED lights spread the beam too wide and are easy to over ride at higher speeds > 15mph. I don't want to spend a bundle on some fancy setup that I will hate on the first night ride. What do you folks like?