Since I had another Luminus SBT-90 Gen 2 to do something with, I modified my scratch built 124mm reflector light, DBC-07.
A write up on it HERE.
So now it’s the largest BLF Q8 ever! lol
And it easily hits a hay barn at 1.02 miles distant…
I tested it with Samsung 18650’s, both 35E and 25S, it makes from 4300 to 4800 lumens and a quick 5M test (too close I know but it was still daylight) shows 1.71Mcd! 
Edit: Worth mentioning that the beamshots here and on the write up were done using the 35E cells at lower output. 
I have new 25S cells arriving today… the ones I tested with have been, well, Ham’red!