My solution was to get them all. I have an Armalite AR10 DEF10 carbine, a Springfield Armory M1A, SAR-48 (Imbel FAL), and SAR-8 (Greek built HK91)...I ain't picking one over the other as they are all mine, mine, mine!
I wouldn't say my M1A lacks in accuracy compared to my Armalite. But it's an older M1A with everything on the gun USGI except for the receiver. It also has a Smith Enterprises US military scope mount and Leupold scope to help in the accuracy department. It's bigger and heavier than the Armalite - but with everything but the receiver and scope being US military it has a presence about it the Armalite never will.
My SAR-48 (full on Imbel built FAL) and SAR-8 - are not scoped but also have their benefits. The FAL has probably the best balance of all of them and the SAR-8 being a license built HK91 essentially is just a tank that will shoot anything and uses dirt cheap magazines that you buy by the 50 or 100 case lot...ever try to buy 100 M14 mags?