Currently, and for the past several months, it's been a Sig P226 with an integral light attached to the rail. I have a .40 S&W upper for it as well, but generally stay with the original 9mm tube. My loads are Speer GD's of the ~125 gr persuasion.
In our "last resort" room is a 12 ga. with 5 rounds of 00 buck and a M-4 length AR; as we live on a relatively isolated farm, better than 1/4 mile from our nearest neighbor...The retreat room is over the garage, in my wife's sewing emporium...one way in, and one way out and with good cellular coverage for police calls.
We don't investigate 'bump in the night' sounds, but do make a call if headlights appear in the long drive in from the road (2x in 35 yrs). We're both in our late 70's, and the local sheriff's and county LEO's have all shot on my pasture range....we'd get a jiffy response if we called, but it'd take 15 to 20 minutes to get here. On the first floor is my German Short-hair who's raison d'eter is announcing all arivals.
Best regards, and keep your powder dry....Rod