I have had good luck with my Chinese AK's. That said, there have been batches with brittle parts. The only chipped trunion I have ever seen was in a Chinese AKM, and so was the only broken bolt I have ever seen. My preference is for Bulgarian and Russian AK's. My single favorite is my Krebs AK74k, though that is about to change. I am in the process of buying a Class 3 shop. One of my top priorities is to have one of my AK74u kits built. That's my holy grail rifle.