Of course China can make great products!
Where do you think Apple stuff comes from? Many (most?) electronics products from reputable companies are made there. These products however are made to these companies' designs, quality control, and testing.
Most of the Chinese brand ham radios I've seen are produced from ham radio hobbyists. They are designed by a single ham and they have boards produced and do the assembly themselves. As they don't make tons of sales, and are their personal designs that they don't want copied or stolen, they don't always provide schematics. As they are personal projects, they design something, then work to improve it, and then make another version etc etc. So there are changes, limited runs, sometimes bugs can be expected.
So there is a big difference between these two kinds of purchases. With the former, you kind of know what to expect; with the latter, you get more inovative, fun, designs. Maybe things geared more for portable use. Performance can certainly be good, but unless the rigs are tested by a major magazine or some hams with good labs, then one isn't always sure. For these I think it's good to join a user group first and see others experiences, and how problems - if any - are solved by the group and/or the designer/seller.
73, Mark