I have two 9AN's and an 8NX. I'm not a Police Officer.
I have a lot of respect for the durability of the 8NX which for years has been my grab light for diy activities and such.
The 9AN's are for feature-rich without a doubt.
The Stinger HP has a large diameter bezel for more a more intense beam.
The KT5 TurboHead kit for the 8NX/8AX is a 2.5" diameter TurboHead bezel for a more intense beam for longer range illumination.
The KT3 TurboHead kit for the 9AN is a 2.5" diameter TurboHead bezel again produces a more intense solid beam.
I really like the 9AN+KT3 but it does not produce the tight-intense beams of other TurboHead models. However, the beam is perhaps more useful for being larger and reinforced rather than thin and concentrated.
Here are some photos you may find useful:
9AN+KT3 inside a BlackHawk M6 Pouch:
If I were a Police Officer I would likely try out the 9AN+KT3 and the 10X as my dutylight for nights...