12.5, 11.5 or 10.5??? What’s your pistol/sbr preference?

Which one would you pick??? (Top to Bottom)

12.5” Porter X Sionics w/ Resonator K & Viper PST Gen II 1-6x W/ Atibal E2 , SureFire DFT , G$ SSA-E X

11.5” BCM w/ Aimpoint Pro , Streamlight HLX , G$ SSP

10.5” Expo Arms w/ XPS2 & Holosun HM3X (HRT Light doesn’t actually live here), TriggerTech Duty SS

10.5 Criterion .300 Blackout w/ Diligent Defense Enticer S & Romeo 8T/PA 3x , Arisaka/Malkoff E2XT , G$ SSP