Xiaomi is supposed to be the best Chinese company. Their products are very good and relatively cheaper. Many people buy their products due to their own MIUI roms.
Right now I am using Huawei Ascend Mate 7 golden version. It's the best phone I ever had.
Sorry to say that what you heard is wrong about hit and miss. Many major brands Chinese phone are much better than the known world brands.
Don't count only those people who are having some problems with there phones. As many of the problems they face are due to their playing with their phone and during those experimentation they break the software or hardware.
You go to any forum belonging to the known brands, you will find that they have more problems.
If you buy from the well-known brands, the chances are that you will get the best phone. Some of the best brands are Huawei, lenovo, Xiaomi, one plus one, ZTE, Coolpad, Jiayu etc. Less know but still good are Zopo, elephone, inew, doogee etc.
Right now I am using Huawei ascend mate 7 gold. I think this is the best phone, I have seen with a wonderful battery. My other phone was coolpad 9976A. It is also a great phone but too big for daily use.
Do some research before buying according to your needs.