Got a Golston from Dae.
My first impressions from indoor use are lackluster. It came apart easy and I tested it as well as put some thermal compound on the back of the star. I also found it needed to be adjusted by twisting the head slightly loose to get a better focus. With two fresh surefire CR123's it reads as 4.22 V and 1009ma off my sears brand DMM (the Golston's resistor tested a 1 ohm). --> I'm certainly not getting the overdriven 5 watts others are getting with the Golston.
I have compared it to a few lights and here some images on the output of the Golston (all shots at 2 stops under exp):
--Dorcy CR123 w/ 1W SV1H-bin Lux & IMS20 reflector running on fresh a RCR123 (overdriven to about ~520ma).
--Dorcy T-Bin 3W 3AAA on rechargables reading about 3.8V.
I like the Dorcy(s) better because of the size of the hot spot(s).
Left- Dorcy 3W 3AAA, middle- Golston , Right- Dorch CR123 w/1W SV1H & IMS20
--new Nuwai ALX-352 5W runing on two fresh RCR123's. The Nuwai just smokes the Golston in every way.
Left- Golston , Right- Nuwai ALX-352 5W on 2 RCR123's
--modded nuwai ALX-1113A w/TYAK 3W 3AAA Direct Drive on rechargables reading about 3.8V. This light is real thrower, small tight hot spot (even smaller than the Golston to the eye, not in photos). Golston is about even with this one in hot spot , but the Golston has more spill.
Left- Golston, Right- modded nuwai ALX-1113A w/3W TYAK
Not too fond of the blue-green tint it, but it is easy to take apart and it sure does have a nice bulid/form-factor for a $29 light. Perhaps I just got a medicore Golston. Or, may be a test outdoors will reveal a better results for the Golston.
UPDATE: dropped a TYOJ star in it. here is what is looks like now:
Left- Golston "7W" w/TY0J Lux III
middle-Unknown Lux V in Nuwai ALX 352L
Right- Q3 TX0J Luv III w/RCR123