I had all 3 of the lights below together, spent a lot of times reading great posts and reviews, and doing my own amateur level testing. Just like to add my humble opinions; hope they are helpful.
Thrunite T2 Neutral White - LED is one Cree XHP 70.2
Wurkkos TS21 4000k - LED is three Luminus SST20’s
Sofirn IF25a 4000k - LED is four Luminus SST20’s (NB: I got the 4000 mAh with Anduril 2 sent from US. The 5000 mAh is only available from China.)
FLOOD:
Without question, the Thrunite is the most floody of the 3. It also the brightest flood (not spot). The combination of great brightness and flood is a very very impressive light. If I walk into a small room and points this light up to ceiling, it’s almost as if someone has turned on the room light. And it does this with ease, staying cool, like it’s not even “trying.” Basically this light has low throw, but extremely high flood.
Next is Wurkko, medium/high flood, medium/low throw.
Very close to Wurkkos, but slightly less floody, is Sofirn IF25a. It has good flood, not just as extreme as the Thrunite T2. Sofirn is a medium flood, medium throw IMHO, and is very bright with both.
THROW:
Not surprisingly, Sofirn, then Wurkkos, then Thrunite. Mind you Sofirn is not a high level thrower. Versus my Olight Pro Warrior for example: Sofirn excels at lighting up a large area at say 50 yards and below, Olight lights up beyond, but a very small spot. Olight is fun far away, but Sofirn is fun up close, and more useful.
BRIGHTNESS:
Sofirn has brightest hot spot/throw, Thrunite has brightest flood (but hardly any throw), Wurkkos TS21 is the least bright, a couple steps behind the other 2.
PRO’s and CON’s:
Thrunite’s biggest problem is the overwhelming (yes overwhelming) green tint of the neutral white sample. I loved this light, but that green is pervasive and I saw it even before reading reviews and complaints about it. (I had the cool white T2 also, and didn’t like that light’s beam color.)
Wurkkos TS21’s biggest “problem” is the Sofirn: Sofirn does everything better. Wurkkos out of the box is for all practical purposes useless until you increase max allowed temp, to 60 C in my case. The light button does crazy blue light things (read thread, doesn’t bother me really). There is some problem with parasitic drain from the button light (read thread, doesn’t bother me either). But the biggest problem is simply that Sofirn is a much brighter light with same beam color. Sofirn out of the box works, and works at a cooler default temp, which I believe is 45 C.
Sofirn’s biggest problem, to my eyes anyway, is its look. But it excels at everything else. It’s like an average looking date with 4.0 GPA, cooks like a pro, and runs the marathon when she’s not studying. Kidding aside, IMHO Sofirn IF25a, the one with 4000k LED, all things considered (size, cost, brightness, beam color, CRI, etc.) will go down as one of the greatest EDC’s ever designed. I love this light. My only wish is a more convenient battery level indicator, like Thrunite, and Sofirn how about adding some colors to this like you did with the LT1 lantern. But bottom line: get this light! I’m thinking of getting one more in case they stop production LOL. All above of course IMHO.