I updated the OP with some data and beam shots.
That S3 seems to be pumping the light out for a small light or is the picture deceiving?
S3 and C108 are looking good in terms of output! 
Looking forward to see more of the C108, it looks like a bad-ass C8 sized light, and with DD… How is the memory?
Hei seems S3 rocks! Also if i expect an higher amp draw from it.
L-ion conversion may be nearly complete . . .