I got the X10 Last night...I have mixed feelings about it. The hotspot is nice its throws well. I deactivate the thermal regualtion so there is no output drop anymore. The light got barely warm after 10 minutes. I feel like thermal regulation is not needed in this light at all. I do hate the very large ugly green spill with artifact right around the hotspot. The tint overall is definitely on the greenish side. Overall It's a great thrower and much shorter than the Scorpion V2 Turbo but I still like the TN more as it's a more sophisticated and the beam is beautifully white with no artifacts.
The S12 is a different light compares to the X10 so it's hard to compare. My S12 DD is significantly brighter than the X10. Yes the S12 doesn't throw as far but not a whole big deal. The overall output of the S12 makes it a more desirable light compare to the X10 in my opinion. Howveer, this is only the case of an S12 DD vs X10 with thermal regulation deactivated. Stock VS Stock I would say go for the X10. The output is not far behind but the throws is noticeably greater. My X10 measured about 184.108.40.206 at the tail cap with three different types of 26650.
But to me the best Single cell XML is still the Scorpion V2 with turbo head if performance was the primary consideration. Scorpion V2 has a higher Celing bounce reading VS the X10.
Beams shots tonight.