Lets say that its 2am. You are in bed asleep and something goes bump. You wake up and realize that someone that doesnt belong there is now in the house with you. What is you go to weapon? Why?
1st go to?...cell phone.
You have stated in your post that you KNOW someone is in your home with you.
1st action needs to be contacting reinforcements and get help enroute.
I could list follow up actions in order..but 911 even if you dont speak needs to be 1st action taken.
Nice choice.
As for me its a 18 in barrel remington 870 synthetic express 7 shot. With 00 buck in the barrel and mag. 6 slugs on the rail. The wife can handle 911.