I have been eyeing Xiaomi for some time and even bought some of their products. And I was not disappointed. Something tells me that it's going to be the next Samsung.
More seriously, since these phones are often bought from "gray market" vendors, I am more worried about cybercriminals planting malware in them when they are imported:
http://venturebeat.com/2015/03/07/security-firm-finds-pre-in...
I never understand this self-defeatist mentality. One represents a democracy while the other represents a communist dictatorship. If you trust them so much why not just move there and become a citizen :-) I mean, I hear there's lot of jobs have moved there the past ~decade.
In contrast, your examples: 1) have nothing to do with China, 2) suggest that two wrongs make a right.