Lezyne Super Drive and Super Drive XL if you want something bike specific. The XL is regulated so it won't dim but supposedly the bluish light makes it seem dimmer than the regular Super Drive. I have the XL and I really like the bar mount design, makes it easy to rotate the light up or down on the fly. I try to be considerate to pedestrians and rotate the light down after dark so it's less blinding. I run it in flash mode during the day which helps prevent left-crosses.