As for the notion of "hate" directed in a borad-brush; there is Century Arms. I know that I have read some positives about their "C15" retro-refurb-SP1, but in most circles the C15 would be greatly derided, even thought a lot of the gun is ex-military Colt AR.
I don't work for CAI and have nothing to gain, but folks blindly pin everything about a Cent gun on CAI themselves, when AFAIK - they merely job out all those Century-branded gun-builds to 3rd part smiths and mfgs. Century provided the parts, the builder was supposed to do the work.
For better or worse, Cent's business model has brought a lot of affordable guns to the masses that otherwise would not have been; like their Sterling MK6 carbine or HK-93 "C93". These re-assembled mix-master parts-guns make a great suitable substitute for the uber-expensive pre-ban versions out there, for shooters who would otherwise never been able to have spent crazy money on a pre-ban.
And if you get a turd; keep at Century cust service until they get it right. It may take a gun - or two, but they usually make it right. If enough Century customers hold their feet to the fire, their products will improve.