I need my bright lights for the really dark unlit areas. I'm only on the mup for maybe 15 minutes of my 1.25 hr commute . So I light to be seen and for cars and such. I need my lights bright so I don't outrun them at 20 or 30 mph. A 1/2 to 2 watt light ain't going to cut it. 100 and 150 lumen lights are at the low end of the spectrum.