Originally Posted by
coffeecake
I have a NiteRider Cherry Bomb, and like it a lot. Also visible from the side. I have to ride in the rear when I go on group rides as it blinds whoever is with me. Doubles as a reflector when turned off.
I have a Cherry Bomb too. It's a decent light with a nice horizontal spread to the beam pattern, but it's
NOT a reflector (despite NiteRider's inexplicable claim that it is):
You want reflectivity, hook up with some prismatic reflective tape
Regarding the original topic, the SuperFlash is a good starting point.
Aim it level and straight back so the hotspot of the beam is aiming right at overtaking traffic, not up, down or sideways. Since your scenario includes fog, the DiNotte is definitely recommended. Available in regular (140) and maximum-strength (400-series).