Yeah, I hate to sound like a broken record here, but everybody has a different opinion on "best tactical light" - even professionals can't agree on a single best light. Which is why you see so many different professional organizations using so many different lights - and even then, "best" is modified for cost, manufacturer incentives, and so on.
For my own personal definition of "tactical: home defense edition", I have a single-mode, twisty flashlight with a high-power drop-in. Specifically, a Surefire Z2 with an M61 drop-in (325 lumens for an hour and a half). Affordable, durable, reliable, and idiot-simple to operate. It's my "bump in the night" light.