My commute has me riding in the dark often. I run a PB 1W headlight on flash and PB 2W headlight on steady, a PB Superflash Turbo rear light on flash and PB Superflash on steady (the flashing lights are on whenever I'm riding). Occasionally ride other bikes at night. All have either PB Superflash or Superflash Turbos and I have several Two Fish style mounts and a number of LED flashlights available when needed.