People keep calling this a "Mcgizmo PD" but while the physical parts may have similarities the UI is very different in design and execution.
I suspect most people haven't used a "Real PD" because of price and availability but its just like the Surefire A2, L1, L2 all of which have brilliantly simple UI. Here is how it works:
Push/twist a little = Get a low light
Push/twist a lot= Get a lot of light.
Lets run a scenario with the "real PD":
Scene 1
You have the "Real PD" etc twisted on low for around camp chores and you a hear crazed bear running towards your camp you can instantly access high by pushing down hard. It will then return to low after you identify that attacking bear as just a tiny squirrel.
Scene 2
You finish setting up camp and hit the sack. You wake up and want to check your watch in the middle of the night grab the PD which you can find because of the glowing trit, give that trit a light push and you can instantly access low. Only 3am, great you get to sleep longer, better zip up that bag, the temperature has dropped. let go of button and it turns off. Back to sleep.:sleepy:
Scene 3
Crash... bang, dang there must be a bear getting into your beer cooler.
Grab the "real PD" and blast it on high in one hard push. Aww, what a cute baby deer. You watch it stumble off blind and confused. Back to sleep. :sleepy:
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The EX10 is very different.
same scenario:
Scene 1
you have Ex10 on low, but want high to check out noise. Click, click push. Squirrel investigated, back to low. Click, push. One last blast around the camp to check for bears. Click, click, push. Nope just squirrels. Click off and pass out. :sleepy:
Scene 2
3am, Check your watch. Oww, I can't see. :duh2: Dang shouldn't have left it on high. Click push to low. Nope still can't see because of the spots floating in my vision. Twist, click, push to ramp it up a bit. Woa! way to much, Click press again, dang its at min before I could release it. Whatever, I don't have time for this, back to sleep, push again for off.
Scene 3
Crash Bang, whats that? Fumble around to find EX10, Click on light. Dang now its on low from checking my watch, that bear is going to drink my beer
. Click, click, push. Dang whatever it was it ran off. I better stay awake the rest of the night to protect my beer. :sweat:
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Conclusion. Make your own!
The Arc6 acts much more like a PD.
I would have preferred had nitecore gone to a reprogramable (with some effort) two stage that operated like the PD.
PS I may have gotten the click, click push sequences of the Ex10 wrong, that just further makes my point.
PPS: Linear ramping sucks!