Three Convoy lights with 8A buck drivers for getting the most runtime out of 21700 size batteries. Purchased for $28-$38 each with batteries included I think these are an incredible value.
*white balance is not consistent
M21B with SFT40:
S21D with four 519A 2700k emitters and 60 degree beaded TIR:
S21B with Osram CULPM1:
Great choices! I didn't realize you could get that driver in the S21B.
I love the 8A buck drivers. Now that they have a 17mm 8A driver I plan to make an S2+ triple.
I would highly recommend it! I just upgraded my s2+ triple with this driver and a Kaidomain 519a DD 3500k. It’s a wonderful thing.