I think they're great.
I've purchased all of 'em except the infrared.
Have come in handy on and off the job several times already. I also make sure my wife carries one with a small knife on her key chain. (She carries the blue. I routinely carry the red and white with me daily.)
If you'll forgive a plug for a good guy from the knife boards, Tim Flanagan of Nor'east knives offers good prices on the photons.
Btw, I don't get a kickback, though I'll sure suggest it next time.
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