For a SHTF gun I would take a M4gery last. Chosen gun for me is a Garand in 30-06. Why? You can't even hide from me behind a Concrete Wall and be safe.
30-06; Turning cover into concealment for over 100 years.

+1 to what Dave said... except... as I pointed out earlier... the cost involved comes into play when people have mortgages and college kids to consider. I would LOVE a Garand, and/or the M1A1 in 30-06. But an Garand for a Grand...I'm not sure I could justify that. And the Springfields M1A1 in CT? 1700 and up.
DaFadda

The only complete AR rifle I'd pick up right now is a PSA, cause they're cheap and spec'd well. A built lower with a Colt, Bravo Company, or Daniel Defense complete upper would be a fine weapon.

An M1 from the CMP would be a pretty safe bet for under $700 (I think).

An M1A is also very effective, and can be found used for around $1300-1500.

When you're ready to shoot some suitable rifles, let me know....I've got a few of them. MBRs rule!!

Grizz

Since you've already got an SKS, you're all set.

Grizz

Grizz... the SKS will probably be my next one. I'm working on a friend of mine to sell me one of his!
Fadda

I'm waiting on one from my buddy. He's got tons of en-bloc clips and ammo to boot along with a GI canvas case. He's asking $700. It'll be the big brother to the M1A I just bought.

Sweet!! That's also a very good price as long as it hasn't been monkeyed with.

I hope to shoot mine this weekend.

Grizz

I would personally take an AR15 over any other weapon in the world if i could only have one. I can field strip and clean one backwards, upside down, and with my eyes closed, underwater, listening to rascall flats, while fending off wild crocodiles. Of course, theres always more to learn haha :-D
http://i131.photobucket.com/albums/p...-13-25_905.jpg

Nice rifle.