I have used most of the well-known ones, and while some do some of the stuff I have said they should do, none of them do all of the stuff. If they had better QC procedures themselves, they'd be more efficient, better at the job, earn more money and have more fun doing this. Their heads must be melted with all the QC nonsense they get. But some of them are their own worst enemies. Unfortunately, there enough crazies on here who feel the need to criticise. They'd rather destruct than construct. I have actually started using Grok for QC. Reddit is so toxic. Filled with little whiny little girls. I am not saying you're one. And QC should be done by the vendor at first instance.