From left to right:
RCR123A for scale
LumaPower Incendio (1xCR123), Cree XR-E LED
Nuwai Quantum-III/TMX-303, 3W Luxeon (factory) -Modified for SSC P4 U2SWOH star
Rock River 1xAA, 1W Luxeon (factory)-Modified for SSC P4 USWOH emitter
Nuwai TMX-301, 2xCR123, 3W Luxeon (factory) -Modified for SSC P4 USWOH star
Surefire 9Z (Z3), 3xCR123, KL3 (gen 1) -Modified for SSC P7 DXWOH star
Surefire Z3 (9Z), 3xCR123, DealExtreme Cree R2 LED module
Surefire G2, 2xCR123, P60 Lamp assembly