I too am looking for another light of this design. It seems to be the best UI for my needs, but as I found that is highly dependent on implementation.
I have a SWM V20C but it leaves something to be desired in terms of having too few degrees of rotation to select the output level. Also it is a bit too large for my preferred size now that I also carry a Eagletac S200C2 for throw. The Nitecore SRT7 has an OFF position like the V20C, but it would also be too large.
I also owned a V20A and it had plenty of rotation degrees. But it does not have a 'standby OFF' positon at the lowest end of the ring, so the light must constantly be flipped end over end to turn on/off before/after adjusting output at the head. (Nitecore's Infilux appears to be the same way.) In addition to being extremely annoying, this flipping is a problem because of the type of work I do. Also both lights would be somewhat low-powered for my needs after converting to my preferred Nichia 219 hi-CRI LED.
I've been looking at the Niteye EYE15, which DOES have an OFF position on the ring. (don't care that it lacks a tailcap switch.) It is also an ideal size, power level and battery type for my purposes! And though it has a limited number of detented steps, it can be reverted to infinite with a mod. Unfortunately what can't be so easily fixed is that it doesn't go below 5 lumens.
:shakehead Even with the Nichia 219 hi-CRI mod I intend to do, that still leaves it well above the 1 lumen max. I would prefer.
I was looking at the SRT5, which uses the preferred 18650 and is still a decent size, but lacks the OFF position. Also at its maximum it is probably too powerful for conversion to a 219.
Aaaaarrrrrrggggghhhhhh!!!!!! It seems I can't have everything all at once. I'm probably going to wind up settling for the Niteye because it is the closest, unless something else crops up real soon!!