Which red emitter for C8+?

I should mention my newest toys, the HS21 and HS42 headlights. The '42 makes a great right-angle light, and I “palm” the '21 lots of times, too.

High-CRI white flood, low-CRI white spot, combo spot+flood, and red.

Both of them have really nice floody red beams that have a nice low-low moonlight mode as well.