I agree with nd4spbh - it really depends on what you get. Some of the newer Chinese vehicles are vastly improved in quality.
There isn't necessarily any copyright infringement and this isn't even necessarily just a "copy". For decades Japanese manufacturers (and others) have sold complete manufacturing lines (dies, tools, molds, etc) from discontinued models to countries like China, India and Korea. They then locally mass produce the models under a different name for their domestic markets.
When Kymco (a Taiwanese company) came out with the "Kymco mongoose 250" quad it was actually fitted with an outdated Honda Rebel engine - a twin cylinder I think. Kymco's quality can't be tooo bad - from what I read KYMCO was chosen by BMW to build the engines for their G450X enduro bike in 2008.