Rear bumper light suggestions

[Bloomer]

Looking for recommendations on a light to mount on my Slee rear bumper, in place where antenna can be mounted on the tire swing out. Was thinking of a single Rigid D2 cube (flood) with a dash board switch. Not looking to wire into reverse lights. Main use would be for illumination when setting up camp after dark, and of course backing up in low light situations.

What's your opinion on the Rigid lights?
Is the flood light the best for my intended use or should I be considering a spot?

Thanks in advance for any suggestions.