My home defense is my search warrant, and SWAT entry weapon before I retired. It is a black parkerized, Remington Model 1100 with heavier springs, a 20" barrel, rifle sights, screw in modified choke, with true glow front, and magazine extension. I at one time had a six round side-saddle on the receiver, but it only added weight, and bulk. If it ain't over in 7 rounds it's time to turn the house over to the intruder. After I've emptied the 870 too. 
Dee,
Got any photographs of that setup??
I will take some when I get back from Florida, and post them here. It's pretty basic, and looks a lot like WNY's rig, only AUTO, and sans the side-saddle shell holder. I, in the old days, and still, prefer a leather cartridge belt with the buckle in the back, and the 25 rounds in front in loops. Faster than the side saddle in every way, and less bulky, but only if I leave the house. If I'm inside, I doubt I'd need it. There isn't much in a house to hide behind if I'm after you with #4 buck magnums.
I see many that mount lights, but I instead chose to install night lights with shields in strategic locations, where the intruder will be facing the lights, and I have shadows. Outside, I have installed street lights on my out buildings I bought from Lowes. They are cheap to buy (about $40.00), last for years and years, and the neon bulbs put out a good, but not harsh light. This is one of the best determent's for intruders. Even the Bible says most evil hides in the dark.