Lemme get "defense" out of the way: Most any old semi-auto in .223 or 7.62x39 will work. An SKS is as good as any, and cheap.
Okay: Hunting and paper. Way back when, I bought a Weatherby Mark V. German made, 26" barrel in '06. I load all my own ammo. I toted that rather heavy rascal all over the place for right at 35 years. I had to do some tweaking of the forearm bedding, and I put a Canjar trigger in it. But it was reliably sub-MOA through some 4,000 rounds. Sub-MOA out to 500 yards, also, not just the usual 100.
There are probably a bunch of rifles available that are as good. I'm sorta dubious that there are many that I'd call better.
The thing about precise aiming is that a one-shot kill doesn't require a follow-up. I'm happy to say I've never needed one.
So, I've never particularly been seriously interested in a semi-auto for "real" hunting. I've had Minis and ARs, but they're not really what I'd call serious rifles, compared to an '06 (or equivalent-power cartridge). But that's just me.
I dunno. I guess I'd look for whatever rifle looks reasonably attractive insofar as aesthetics, and make sure it fits my body dimensions. Anything can be tweaked to shoot tight groups. It ain't about ego and cost; it's about hitting the intended target.
Enuf babble...