I haven't had a chance to read thru this entire thread - yet. But from what I have read so far it looks like the choice you are trying to make is basically between a smaller caliber rifle that doesn't look all "killy" and "assaulty" - and a .308 rifle that doesn't look all "killy" and "assaulty".
First off I think you should look at what you're trying to do with it. If you are talking home defense and killing varmints - then stick with the smaller caliber. .308 is overkill - and a lot more expensive to buy the gun - and to buy the ammo for.
But if you have to go .308 a scout type rifle is a good choice if you don't want a battle rifle or an "assault" rifle.
FN makes a nice option if you want to go .308:
http://www.gunblast.com/FN-AR.htm
But personally - I think you should stick with something in a smaller caliber based on the description of what you are looking for.
One option (don't know if it's been mentioned yet in this thread) - is to get an M1 Carbine. The mags will be more freely available than the Mini14 mags - they are great little carbine - the only downside is that the ammo will be more expensive than .223. But the design is battle proven - and they are a great little rifle to shoot. Auto Ordnance makes a new one - or there are plenty of real live WW2 ones still out there available:
http://en.wikipedia.org/wiki/M1_carbine
Another option is to find a rifle that takes AR mags (so you will EASILY be able to find mags for it) - but doesn't look as "evil" as an AR does
Remington makes a pump action rifle in .223 - that takes AR mags
http://www.remingtonle.com/rifles/7615.htm
If you absolutely have your heart set on a mini-14 - the Gunblast guy doesn't seem to think they are all that bad:
http://www.gunblast.com/Ruger_RanchRifle.htm