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:
Having broadened my horizons beyond Convoy, trying out my first Hank (D1v2 which disappointed me) grabbing some Lumintops (the FW21s which really impressed me), the odd Sofirn (SC32), a couple Wurkkos (TS10, HD15R etc); I always resolve that Convoy are the absolute best balance of value, DIY-ability and performance. If only Simon were to sell a few more enthusiast-desired items (like these new drivers), smooth body exotic metal parts, 18500 tubes, spare pills, spacers, etc.