At the back I have a Cateye LD600 on constant, a small flashing light on the pannier and on the front a light my son makes - 750lm with a Cree MC-E driven at 700mA per die, to give a focused beam there is a CMC RS optic. This light has high, low and flashing settings. Low is fine for roads, angled down no-one complains; I only use the high power on the tow path to throw a long beam that catches the pedestrians dressed in black, at a cost of £180 with a 4800Ah battery and charger, it is a bargain. Lastly, I have ordered a Topeak helmet light to finish off the Christmas tree effect.