These lights may not be as tough as they look. My white output light dropped 2ft from the leg pocket in my painter pants and landed bezel down on concrete and was and still is dead. Two feet isn't much of a drop. I have been swithching to LED lights because they're supposed to be more durable than hot wires, but this doesn't impress me. The LED itself may be more durable than the hot wire bulb, but that doesn't mean that the entire light is dependable. Something came loose or broke inside the elctronics module because the LED still works when the battery power is applied directly to it and the module doesn't work in the other light body. I wouldn't depend on these for rough use.
It's good to see your output measurements of these lights. Your output measurments show that the total ouput of these lights is less than the Streamlight Jr. Lux. Others have been claiming that the output was greater than the Jr. Lux, but I think they were judging by the spot and not total light. I was puzzled as to how the Costco could put out more light than the Jr. Lux and do so for twice as long. Now I see that the Costco run time is longer, but total output is less than the Jr. Lux.
I was impressed with the output of the whitish ouput Costco until it died. I'm not that fond of the bluish output Costco which I percieved to be much dimmer than the whitish output sample.
Did you measure the output of both lamps and average them, or measure just the whitish output light?
Thanks for all your good work.