I once bought a 3600$ AR
it was complete crap
Then i bought a colt, and since then every single AR I own is a colt. Some have different barrels, different tack ons, but they are all colt.
I hear good things about kac but it is lots of money
Shooting means different things to many people, usually and I mean usually here gang, accuracy and reliability are on opposites. There are a few unicorns out there like kac, but usually if you want .5 moa then you will suffer reliability issues.
Personally I value BANG over BULLSEYE