Well, guess I'll make my light recommendations --

Mars 4.0. Much brighter main LED than the 3.0, doesn't need a tiny screwdriver to change its batteries, and has amber side LEDs, which won't be confused for red taillights at a distance.

If you're using generator lighting and have a rear rack, try to get a B&M Selectra. Besides a nice main LED, it has two small LEDs on the sides pointing outboard.