Since I already carry a Gerber Infinity (single AA LED) that seems to last forever, I'm mostly looking to get the Pico for the survival kit. Possibly getting another for a keychain if I really like it.
I've got one of the CMG Infinity lights and I use it a lot. It isn't going to blind anyone but with a lithium battery in it the darn thing just runs FOREVER. I also really like my Fenix P2D Q5 which is very similar in size. If the Fenix had an extra extra low setting it might put the CMG out of a job entirely.
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"There is not a man of us who does not at times need a helping hand to be stretched out to him, and then shame upon him who will not stretch out the helping hand to his brother." -Theodore Roosevelt