I have two niterider lights, one for my handlebars, and one for my helmet. Each cost around $100, but at this point, I can't tell you what model they are. I like the tandem, it gives me a lot of light to see by, and if I think someone doesn't notice me, all I have to do is glance at them, and the beam from the helmet light gets raked across their eyes, and they notice me pretty quick at that point. I'm fairly sure that has saved me from getting flattened at least twice. For the back of the bike, I have a pretty bright Planet Bike blinkie. When I start commuting at night, I'll add a second one, for extra visibility, as well as a bit of depth perception, which I would leave in just the "on" position, not flashing - I read somewhere that it's hard for a driver to gauge how far away you are just off a blinkie.