Off-topic: Something for home defense?

[BrianG]

I've been looking for some kind of weapon for home defense. First, I was going to get a handgun, but after reading a bit about this topic, many people prefer a shorter shotgun instead. Makes sense really; not as much potential for overpenetration, ammo is pretty cheap, gun is pretty simple/basic and relatively inexpensive.

So, my question is; out of all the shotguns out there, does anyone have any personal experience? Off the top of my head, I'd want a shorter shotgun for some maneuverability, able to hold as many shells as possible, be reliable, and inexpensive. Any thoughts?