So far, I've been disappointed with most things "automatic" and am gun shy to try more if a good manual alternative exists (no offense to the NAO - I have no experience). My last car purchase, I paid extra to get manual stick shift/AC/wipers/rear view dimmers/etc. and love it vs my wife's fully auto everything car. I don't even like like electronic switch flashlights - again, I'm just niche player
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I bet you didn't pay extra for a carburetor (Phew, had to use spellcheck on that!) over automatic fuel-injection. The key to automating a thing well is to measure the right things to let your system react, and then planning reactions well. For some people and situations, you'll need to keep the manual-selected options, too.
I use a Zebralight headlamp, and sometimes pair it with a cheapy 3xAAA Rayovac Indestructible headlamp. The Zebralight is suited well for working, and the Rayovac for walking around. Its overbasic UI really removes the options that I like in lighting...
But the ZL can run cells flat in an hour, leaving me in the moonlight 'dead-cell' modes. The Rayovac will get gradually dimmer over the course of about a dozen hours, at which point it IS dim... But still enough to walk in the dark by with its floody beam. I used the ZL most extensively recently to put more cellulose up in the attic, and to check on frozen pipes in the winter storm. It was great for things I am touching.
I live out in the kind of almost-nowhere where WalMart is about ten minutes away, and you can go outside on a moonless night and see your cat... And a neighbor's garage light half a mile away casts shadows. I wonder what a Petzl Nao would make of this?