Now that the days are starting to draw in, I reckon I'd better get weaving if I'm going to make lights for my utility bike. I've decided to do an Achesalot-style 3xSeoul P4 array for my headlamps.

But I don't know what lenses/optics/reflectors/foobars to use. Everyone seems to have different ideas, often changing from day to day

Is there any consensus on what would do well for the road at all? I never go offroad, my problems are strictly hostile and/or insane drivers, potholes, and oblivious pedestrians.