Once you go with a SureFire lite in search mode, you are stuck with it for the duration since your own night vision is shot. A goblin seeing that beam sweeping the living room or barn and yard will get in a shadow and wait in ambush for "flashlight man" to pass by before shooting him in his backlit back.
Keep the SureFire light, if you MUST use it, for a one second ID and blinding burst RIGHT before you shoot him, AFTER you have found him in stealth mode.
I cannot think of a better way to get dead than to go looking in the dark for armed criminals by sweeping far out ahead of me with a bright light, practically yelling out "HERE I COME! GET READY FOR ME!!!!"
IMHO, tactical gun lights are ONLY for SWAT Teams who are rushing in on shocked and dazed perps who have just been awakened by flash bang grenades. THEN they make perfect sense. If they are used by the single property owner, he must be VERY disciplned, and NOT give in to the temptation to announce his coming with a light search. He must save it for the last second to ID and blind before shooting.
All just my humble opinion mind you, based on no personal experience shooting bad guys. Your mileage may vary.
The Thebans lit torches and set out to hunt them down. The Plataeans simply waited in the dark and using the light of their enemies torches to locate them killed them.
I guess those people 2,500 years ago already knew not to use flashlights improperly.
BTW I could be mistaken on the identities of the combatants as I am going on hazy memory but the basic story is true.
If one absolutely must go looking for the source of that bump in the night is worth the money for some good night vision googles or monoccular. As a boater I have found them a great boon for navigating narrow channels on moonless overcast nights where there is almost no ambient light. They are also priceless for seeing what has awoken my hound in the middle of the night. I can quickly tell if it is racoon or the porch or a coyote in the yard, or a potential intruder.
As for .30 carbine a .38spl revolver is a very good means of self defense that will very likely serve you very well. Unless one is willing to devote the time to throughly master a semi-auto pistol so that working the safety is absolutely a conditioned response, and one is willing to do the necessary maintainence faithfully there is very little advantage in the quick reload for the opdinary citizen. A whole lot of the people on this website have shot for 20 or 30 years so we talk about our tastes and preferences as though they were gospel they are not. The only absolute truth about handguns for self defense is a .22cal short that hits the target exactly is a whole lot better at stopping than a .50cal hand cannon that misses the target. I also note that more than one shooter has had their night vision limited severly by their own muzzle flash in the dark, Thus a .38 spl that does not have as big a muzzle flash as a .357 magnum may be a better choice for hime defense in the middle of the night. Just my humble opinion.
Stay well - Stay safe - Stay armed - Yorktown