What’s the current choice for compact, single CR123 twisties?

I recently got a freebee and actually liked it so much i got everyone in my family one for their keychain. It certainly serves a purpose. Not 123 it's AAA and only 90 LM. Just a thought. I do also like some of Maratac lights in the small category but they are clicky and rechargeable's.
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Just my 2 cents.
 
I just skip the QTC entirely. You just e-mail Robyn and let her know you want it single mode. I just get mine as single mode at full power.

Twist on. Twist off. Couldn't be simpler!

Fortunately, single mode, full power seems to be the de facto failure mode for the QTC feature
 
Fortunately, single mode, full power seems to be the de facto failure mode for the QTC feature
But if you e-mail Robyn, she just skips putting the QTC pill in. The light will just have a single mode. There's nothing to fail. That's why It's the best. You just have a single mode, though. I think she can do one of eight levels, if you don't want it at full power. I just do full power, and it's great.
 
I agree the Quark Mini is a great choice. Program to the Medium-High configuration, and it will turn on in medium all the time unless she cycles it twice quickly which is a very deliberate action. There is very little slop in the threads so accidental mode change is pretty unlikely, from my experience using one for several years. Also, you can get the brass plug for the tail if you don't want the magnet in there.
 
The quark mini is a wonderful light. Be aware that the contact surfaces need to be cleaned, and the O-ring needs to be lubed at least once a month or more with heavy usage. It only takes me a couple minutes to do.
 
Honestly though, other lights just don't require THAT level of maintenance to work reliably.
 
surfaces need to be cleaned, and the O-ring needs to be lubed at least once a month or more with heavy usage.
with all due respect, suggest you consider a different strategy

Do not flood the O Ring and threads with oil based lube.
Use a grease such as Nyogel 760g.

this is why I say that

in the past, when I used twisties with Nano oil for lube, I found the lube would flow down the threads and accumulated between the body tube and the head.

Because lube is non conductive, the light would become unreliable. I also found the O ring oil tended to dry and disappear, which led me to add more oil.

When I stopped using oil, and switched to Nyogel grease, it reduced how often I needed to wipe off the excess from the end of the body tube, and the contact ring in the driver.

I also found the O ring did not dry out, as the Nyogel is more persistent than Nano Oil. The main area of friction in a twisty, is at the O ring, that is the part I focus on. I limit the use of excess lube on the threads.

Here is an example of a freshly lubed light, using Nyogel 760G, which glows under UV:
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I only put lube on the O ring and upper threads of the body tube, and wiped it around with my finger, to remove excess. The lube in the head is only from the direct contact with the Oring and body tube.
 
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