I like that you push the envelope with new lights and work with BLF to make your lights even better.
That said i was considering buying a Sofirn light but went with a different light instead. I had posted my thoughts in another thread of mine, which i will repost here with suggested improvements:
Improvements: Let the user choose 1A charging as some will prefer a slower charge rate to maximize battery durability.
Constant brightness till the battery is low would be appreciated
Improvements: Add low voltage protection. And change the UI so you don’t have to hold the switch to turn off. My Wurkkos WK30 has the hold to off and it drives me nuts.
Improvements: Adjust the ATR to 50ºC. Make sure larger batteries fit.
Thoughts: Constant brightness until the battery is low would be great. Make sure the PWM is not noticeable.
All lights should have hidden voltage checking ability. And the ability to charge to 4V (80%) would allow people to make their lithium batteries last many more years. And make sure to use USB C.
Also the UI is extremely important, a good UI can make the light better with no hardware changes. More lower cost Anduril lights would be nice, but also consider making lights designed for non flashlight people, simple 1 or 3 mode with a simple one click to mode 1, another click to mode 2, another click to mode 3 and another click to off.
Personal interests: I missed buying your 4AA light before it went out of stock, they may not sell as many lights as lithium but its an important market that can grow with the right advertising. Also 1AA lights are great if they are simple UI which would also sell well to non flashlight enthusiasts.
Finally consider posting accurate lumens/runtime graphs on your website for each light.