My headlamp of choice is actually a rayovac cheapie from wally world. It has a single white LED, dual red LED's and a Xenon lamp on it, and it runs off of 3 AAA's.
My other choice is a brinkmann LED light. It's got a single LED, pushbutton on the back that also is the on/off switch, and it's nice white and bright.
I have had too many photons get crustified to the point of no return to even bother spending the money on them anymore.
The IR ones are bright enough that you probably could use it for aerial signalling, however I wouldn't rely on it.
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