Need advise/help choosing my AR (or something else). I am on the fence whether to get a .223/5.56 AR15 or a .308/7.62 AR. Budget limit (for the rifle only) is $1,300. If I go with AR15, I am almost set on DDM4v3 but want my AR to share ammo with my hunting rifle if possible. Having a more "potent" .308 AR doesn't hurt either and if it proves accurate enough, I might end up going hunting with it too (if it is legal). I am also considering PTR91 but want to hear if there are better options out there. I am aware of the extra (4 lbs) weight & ammo cost difference. Just want to see my choices before really finalizing my purchase. Oh...this is supposed to be my all purpose, SHTF go to rifle so I want to really make sure it is a reliable weapon. Thank you.