Good work rides.
One thing i have not tested the trustfire 5000 mAh yet myself but reports on the net they are between 4200 and 4500 mAh like the king kongs, but i belive no one has been able to test both batteries with a discharge higher then 1 amp discharge due to basic hobby chargers and for the king kongs they have gone off data sheets.
Once my sample gets here most likely in 2 weeks i will discharge the trustfire 26650 and king kongs at 3 amps and then run a 7 amp discharge test with data logging and post up the graphs if hjk does not beat me to it, i think the trustfire protected 26650 is the safest option as its the only one protected and at 3 to 3.5 amp discharge the king kongs and protected trustfire 26650's should be close.
Im intrested to see if the protection pcb can give atlest 3.5 amps as thats all it needs to give and that is about the most your well driven xml will draw on one cell, since the 2400 / 3000 mAh 18650 trustfire flames can give 3 amps no problem i think they should be fine and early reports seams good.
There was a 1 amp test done here post #7