The truth is, none of us know what type of situation we would find ourselves in if the SHTF. We know what type of tactics we would like to employ, but to assume that things would go as planned is absurd. We can't contol the actions of others so we need to be prepared to be as versatile as possible and our weapon should reflect that. It should be able to take small to medium game and engage multiple targets at short to medium ranges. For me, that's my Colt 6920 wearing a 1-4x scope and back-ups. It isn't perfect, but seems to be the most versatile. If I had the opportunity, I would also carry a 12ga pump and a Glock 22, my wife would carry the AK and and a Glock 17, and my daughter would either have a .22lr semi, or one of the Handi's. The funny thing is, if I didn't take the AR, I would either take the Savage 30-06 or the Handi in .223. And like most of the wisdom in this post, I'd try to avoid a fight as much as possible, but try to be prepared if it did come.