Ditto for the Cygolite ExpiliOn 350. Most of my rides are pre-dawn so I can still get to work early. Normally use the lowest of the constant lighting settings and have plenty of light to navigate with. Appears to have no problems being seen by motorists. So far, morning rides average about 45 minutes to an hour and I charge the unit on weekends. Reverse mounted under the handlebar and it stays nicely tucked in. Very easy to get on and off the mount and the hardware fits the 31.8 handlebar easily. Great light.