No comments yet, but I did my first commute yesterday with my new 200L/140L combination (this is my first bicycle commute in years) and was very pleased at how much distance the passing cars gave me. My commute home was in the daylight so I set both lights on slow flash and feel that it helped also. This is a great set of lights; I run both lights on a single 4-cell battery carried in the seat bag. I have mounted the taillight on the rear rack (I kludged up an adapter for it) and attached the taillight mount to the stem as the headlight mount (I didn't like taking up space on the bars for the headlight.)