I'm an expat living in China and been a VPNinja, OpenVPN subscriber for almost 3-years. During the past few years China has closed many OpenVPN doors on the Great Firewall of China, but the Ninja Squad has always kicked a new gate of access when other VPN providers have given up.
I also had great support from the Ninja's with email replies to my questions within 12 hours typically. Can't say the answer is always what I wan to hear but to be fair they have provided the services they advertise and been quick to respond. I currently use other OpenVPN suppliers and have used many other suppliers and can honestly say VPNinja provides the best OpenVPN service from China with almost no dropped links.