I'm at the stage where if were buying another bike now I'd really only consider a joint venture bike, possibly with the exception of the Jialing JH600. Even though it costs more a YBR250 really is a reliable choice in terms of repair, maintenance and running costs. Sure, Japanese badged bikes made in China are slightly poorer than other factories worldwide, with a few niggles and more prone to rust than the same bike made in other countries, but all in all they are R&D'd properly. Chinese companies that have no connection with an overseas company are too much of a gamble in terms of reliability, and even safety, as the 'bolt them together and ship them out as quickly as possible' mentality seems to be the most common approach. Or you could buy something imported and bigger and pay 3000-4000 to have it registered in Suzhou, Jiangsu province. But the parts and tires situation these bikes in China is really tricky.

Realistically a Honda CBF150, Qingqi QM200GY, Suzuki GSX150, Yamaha YBR125, YBR250 and Suzuki GN250 are a guarantee of reasonable quality. Qingqi QM250-2D, QM250GY-B, still seem to be mild gambles, and the Chinese bikes a complete gamble!