I commute 11.3 miles each way..about 4,000 miles each year =/-, for the last 6 years. I leave at 6:10am and head home at 6:00pm.....so this time of year I am in the dark both ways....I use a Dinotte 140L for my taillight and Dinotte's 800 lumen headlight and am very pleased with them....This is the third year for the headlight and the 6th year for the tailight. I will be switching to Dinotte's 1200 lumen headlight this season....they may be expensive but the reliability and high level of brightness is worth it to me.