Thorfire recently sent me a
TK01 for 90% off to evaluate and I was pleasantly surprised. (They didn't require a public review, just asked for feedback, but I still wanted to disclose.)
The highlight for me is the emitter. It's a wonderful high-CRI neutral white, with imo, a perfect tint.
A quick summary after a couple of weeks with it:
-Pros
Lightweight
Excellent emitter
Great output level for a single-mode keychain edc light
Captive head
Inexpensize
-Potential Opportunities (some subjective/personal preference)
May be difficult to lube threads if/when needed since there isn't an obvious way to remove the head
Long thread travel between on and off (~full rotation)
More color options would be nice
A little slick (e.g., I really like the knurling on the Ti 2)
No clip (a Fenix clip might fit but I haven't checked it yet. Unlike the others I did put the TK01 on my keys and plan to keep it there.)
Couple of pics:
(left to right: Reylight Mini, Thrunite Ti2, Thorfire TK01, BLF-348, Lumintop Tool Cu, Fenix LD01)