As a rule, the trustworthiness vibration of the battery world could improve. Batteries are electro-chemical, industrial devices manufactured by medium to large companies (OEMs - Original Equipment Manufacturers) who generally aren't very happy to see their products in the hands of irresponsible crybabies (a negative thing, like most fears).
The chinese market has a lot of battery OEMs, however getting their products means we need to buy them to some reseller or battery rewrapper. Battery rewrappers hike up the price as a rule, this means that if you need to buy batteries for the cheapest money it can be done, but you have to know what and where to look for. Battery knowledge is also important.
The following thread is of great help: Massive post on where to get lithium-ion batteries everywhere in the world! Look at Post 2-5 for info, And Canada Post 123
You didn't say what kind of batteries you need or aim for, what use and etc. but, for a start, you can find lots of battery reviews @ lygte-info.dk (the older reviews may not fully reflect actual cell performance).