I am the original poster and can not believe that this thread took off in all directions. I do believe most made very good points, even the ones slightly off-topic. Here is my 2 cents...
First and foremost, Beretta is a swell firearm, if you have never fired one, go rent one and give it a try, you might be surprised. I was a firearm instructor in the Suck, and the only M-9 malfunctions I have seen are the occasional cracked lock block (after thousands of rounds - the issue has since been fixed) and those caused by operator error, like limp wristing, etc. As you may have guessed, my SHTF gun, regardless of scenario, is a Beretta PX4-C .40S&W, because it is my CCW and will most likely be on me, it has never had a malfunction, and I am familiar with it.
This thread is very much like the "if you could chose one knife..." wherein the common answer is "the one on me..." So, although I agree that the scenario dictates the weapon(s), we do not have the luxury to plan to the exact date/time a SHTF incident will occur. It is nice to think the scenarios through, but when it happens you will most like be sitting in front of your computers in your under-roos

. That said, I believe there are two scenarios: Fight or Flight.
Fight = shelter in place. In this scenario, home defense strategy and preparedness is paramount. A lot good ideas on home defense already mentioned here and in other threads in Practical Tactical. What hasn't been stressed so much is the preparedness side, i.e. food, water, generators, etc. Have a stock-pile...
Flight = bug out. In this scenario, you will not have time to open your gun safe and pick and choose what scenario is actual occurring. This is more a go bag that is ready to run (BOB). How prepared are you (we) to bug out? I would guess not that very. Just some thoughts on flight:
- Fitness level - need I say more.
- How far will you get in poor weather (flooding, snow, heavy rains, etc.) bugging out in your, let's say, Honda Civic. I believe every household should have a 4x4 partially loaded for a SHTF situation.
- Another angle, do you have important paperwork (trust, wills, medical info, insurance, cash, coins, ect.) in your BOB?
- Where do you go? Do you have a plan. I am seeking some 'wilderness' land in a very rural area.
I just realized I am going off track in my own thread... Sorry.
Again. My SHTF gun is a Beretta PX4-C .40S&W. Additionally and ideally, you should have a M-9 (9mm, common round and current military side arm), a 5.56mm or 7.62mm (long range and again, common military round), and a .22lr (light weight for food). Other considerations, a 12 gauge (common military and law enforcement round) and a carbine in the same caliber as your sidearm, which can accept the same magazines (save space, same ammo and magazines).
Love this thread, as mental preparedness is half the battle...:thumbup: