To the OP, what do YOU in your gut feel is more important?
We told you to do that! You can thank us later.
I'm torn.
I guess I am leaning toward ammo capacity.
When we are at the range we are usually shooting at stationary targets, and we take our time aiming.
I think it would be much harder to hit a moving target, under extremely high stress, perhaps in low light conditions.
I've shot a lot at the range, but have never really trained for a true real life situation.
I think unless you have seen actual gun combat few people have.
You probably can never have too much ammo.
I also have an AR, and pump shotgun.
The pump shotgun really isn't ideal if I miss and I need to get off another shot. It does have an extended 8 shell magazine however.
The AR is a possibility, but I think it would be dangerous to go investigating with a long gun, because it can be taken away easier, and as the retired police officer said, it would be harder to open doors and move things.
However, it would be nice having 30 rounds in a magazine of 5.56 going about 3,000 fps. Those are extremely powerful rounds. Perhaps too powerful...
So I guess I am leaning toward my Glock 17 with the light, strobbing light, and laser.
I shoot very well with all my guns. However, I am no longer proficient with the shotgun. However, I can be.