as for the SR52 UT I cannot wait to have the cash for one! The SR52 is one of the greatest high output LED lights I have ever bought. Flashlions review of the SR52 UT is amazing. Sure the M3X UT may throw further but the SR52 UT seems to have a much more useful and even spill beam on top of having what looks like the whiter tint of the traditionally domed XP-L V5 which is awesome!
I dig the Sr52's 3x18650 set up as well and have zero issues carrying my stock SR52 in its belt sheath. Ive bought a dozen or so lights this year and the "fund" is pretty darn dry. I WILL get the SR52 UT which uses what is actually called an XP-L HD emitter (thin silicone wafer over the emitter) NOT a true XP-L HI de dome which has nothing over the emitter. Olight seems to have pulled off what many thought could not be done by protecting the emitter without a dome, keeping true XP-L tint while doubling throw at the same time. SR52 UT beam appears to be artifact free to boot. Run time and regulation seem to be out standing all with the micro USB built in charging capability. I travel with the SR52 a good bit alongside my custom Malkoff Mag. If I need to see further than my Malkoff can throw the SR gets it done and I can plug it right into my cars USB port to charge again.
I travel from pitch dark countryside to light polluted suburbs in the same night a good bit and use my array of lights quite a bit. All that being said the M3X-UT, while not as stout as the SR or as long running on higher out put, is a benchmark light in terms of out put, throw, beam quality and mostly compactness and portability. I will only spend so much on any light hence I do not have any Tiny Monster lights. Would love a TN32 but its HUGE to big for my needs that my SR and a couple other lights can fulfill.
The below 80,000 candela pocket throwers are pretty hot right now and I love it. Although the TK32 would need a deep pocket its still the most compact 40,000k Ive got. Now Ive got the ET T25C2 with the drop in XP-L HI module which quite honestly appears to out throw the TK32 and slides easily into the pocket. Got the G25C2 MkII XP-L HI that is just a factory freak that got loose. I swear it cranks at least 1200 lumens OTF and is kicking 55k+. Run both ET's off 2x3600mah 18650. Run time with both is great. Output for both is top of class. My G25C2 XP-L has that true white XP-L domed white tint yet is a true de dome. Ive even used a magnifying glass to make sure it wasnt an XP-L HD. True de dome, a bit of the dome remains in tiny bits around the emitter and was de domed by ET. Have no idea why the tints between the two ET's is SO different. The T25C2 XP-L HI module is also a true de dome XP-L but its tint is very very neutral and upon closer inspection appears to be a Cree de dome in fact it does not look like there was ever a dome over the emitter at all. Still very content for all range and out put needs. Ive got the full on turbo head ET MX25L2 SST-90 as well. It may only be a 160k light but throws the biggest throw beam Ive ever seen out of any hand held light. The SST-90 through either standard or turbo head delivers lumens down range with the force of a freight train there appears to be next to no lumen drop over its entire range amazing and VERY expensive.
Not impressed with either the new TM16 or the new TK75. Both companies seem to be afraid of U3, U4 and XP-L emitters in their big lights. Sure the latest XML2 U2's are the best and most efficient U2's Cree have made to date but Im not impressed. Even at 4000 lumens its not very noticeable over the 2900 lumen TK75. Thought throw would step up to no less than 155k in the TM16 and TK75 4xemitter set up. Fenix absolutely has first rate, very stout internal electronics down very well. My 2015 TK35's ability to crank 1000 lumens for a full 30 minutes before timed step down via well designed beefy electronics says quite well for Fenix. Nitecore is capable of better electronics but just dont seem to have the capability to mass manufacture it yet. The EC4 review on this forum shows the light cranking 1000 lumens for over an hour dropping only when the cells gave out. Ill believe it when I see it for myself but new gen (2015-) Nitecores have been a big step up.
Whats next for throwers? The XHP-50 and XHP-70 break new ground in efficiency and both run cool with great out put. Battery technology needs to catch up with todays new lights. Sal at Orbtronic told me Panasonics goal for 2015 was a 4000mah 18650 with a wide amp range and 13+ watt hours. The new Samsung 3500mah 18650s have lower internal resistance than regular IMR cells and will steadily feed up to 8 or 10 amps before the mosfet protection circuits trip. With their lower IR these 3500mah Samsungs should hold their charge better than the 3600mah cells that came right before them and unless you are running some insane 10000 lumen Vinh monster etc. should be near perfect for todays stock throwers. Ive ordered half a dozen of these cells so will post results.