FAL's rock.
HK91/PTR91 haters, buy this:
PWS FSC91 Compensator - HKPARTS.NET
It will make the HK91 the softest shooting .308 you own. It is what makes the SCAR 17 so controllable.
What's interesting is that the pistol calibers came much later. It was originally designed for an intermediate cartridge (7.92x33) but only gained widespread acceptance in 7.62x51. I think arguing HK vs FAL is a bit moot at this point considering they are both outdated. The "better" platform would be a modern AR10 type rifle. OP wants a FAL just because he wants one, and there's nothing wrong with that.The HK 91's roller locking design works great with pistol calibers, and maybe alright in .223, but with .308 they just plain have a fairly stout amount of recoil. .308 and it's level of recoil well is just a bit too much for the roller locking blowback design IMO. I love H&K's, but the FAL is a "better" platform IMO.
You got it backwards... The HK91 is a clone of the CETMEICetme (HK clone)