First good ride with a helmut mounted Princeton Corona. With all 8 LED's on the trail was lit up pretty well. My 90min commute from work starts before the sun sets and it's nice to be able to choose how many LED's you want on either all 8, 4, 3 or 1 with dimming and blinking modes. I started my ride with one LED blinking then all 8 come on when I hit the woods. My main light was an old Nite Rider 5 D cell 15W handle bar mount that has served me well for many years died last night. I just ordered another Corona for the handle bar through Amazon, it was $52 with free shipping. It would be nice to have a Q/R mount and to be able to unplug the cord from the light. But over all I'm pleased.