So I've decided to make the step up to a shotgun for home defense. I'm in a big old 4 unit house and my apartment has only 4 rooms. I'm not really a shotgun guy (not because I don't like them, just don't have a lot of experience with them). I like the idea of the 20 gauge for home defense, as I've only fired a shotgun once (outdoors-12 gauge) and the recoil/noise was pretty brutal. I understand a 20 will more than do the job, and may allow for quicker follow-up shots if they are needed. I'm not looking for anything with a lot of bells and whistles, maybe just a light on the end of it. So my question is- what do you guys think of an 870 youth model for home defense in my situation? My reasoning is that it's light weight and shorter than a standard model, and will be more maneuverable in my small 1 bedroom apartment (although I don't plan on clearing any rooms). I believe it holds 4 shells and 1 in the tube, which is adequate for my purposes. If it's not enough I keep my primary carry gun loaded next to a spare mag in the dresser (Kahr PM9). Also my girlfriend will be taught how to use it, but probably won't shoot it for practice. I don't plan on hunting with it. It'll be strickly for SD or "end of the world" type scenarios. Sorry to be so long winded, just want to get all the info out there . Any thoughts/opinions?