I also have the light listed as #2 in my previous post which is the "BLF SP36 with Anduril" and it is my favorite light (so far). I thought you were interested in the "BLF SP36 with Narsilm" which was listed first as #1 in my post (but not because it is the best, but because I listed the lights from most to least expensive). The "SP36S" that was listed as #3 in my post is the simplified version of the SP36 and it is neither Narsilm nor Anduril but is a proprietary Sofirn user interface.
One useful feature of the "BLF SP36 with Anduril" is the ability to check the actual measured numerical battery voltage when in "Battery Check" mode (even while charging) by counting how many blinks the light makes. This feature is not available with the "SP36S".
Forum member "jeff51" reviews the "SP36S" in the thread listed below and compares it to the "BLF SP36 with Anduril" including what is missing in the simplified version:
https://budgetlightforum.com/t/-/58792
Below are links to the manuals (found in posts on this forum) for the three versions of the SP36:
BLF SP36 with Narsilm Manual:
https://drive.google.com/drive/folders/1T2Hs6b4nkUH6BiDvrCL0pCw1VTeHqjmS
BLF SP36 with Anduril Manual:
http://myosuploads3.banggood.com/products/20190516/20190516040231Anduril-SP36usermanualdraft02.pdf
SP36S Manual:
https://drive.google.com/drive/folders/1oZvw8Pybww_O198ynTl8yNXkUjUG9ohw