Got the Teclast X98 Air 2 HG8N a few days ago from TinyDeal. Arrived with dual boot 4.4/8.1, both in Chinese. Had to change to English, get online and ran OTA/Windows updates. No issues with camera orientation or Google Play. So far, very nice tablet. The Windows experience is odd. I want to swipe a lot for navigation since I've owned a few iOS/Android tablets before. Taking some getting used to actually using scrollbars again. Also found out that some sites and programs really are not designed for such a relatively small screen. Options are very small and hard to hit correctly with a finger. Stylus helps, but still tricky occasionally. I would recommend it with the caveats that it will not be in English, Android has a lot of crapware, and Windows can be tricky. I would like to install W10 and custom ROM but still trying to get a handle on the process for this model. Similar model threads are hundreds of pages, and may not be entirely compatible with this one.
Editing my post after getting a few more days hands on with this one. Initially there was a lot of focus on setup, config, tweaking, it was my new toy. Got it to a comfortable, useable state and now down to actual usage. The screen is gorgeous, that part still holds very true. The battery life is terrible. Android seems better than Windows, but I haven't done any benchmarking or close examination. It looks like for Android at least, the OS itself is consuming the most battery. I haven't gotten a single day of usage without stopping to charge at least once. I pretty much just keep it plugged up unless I walk outside with it for a bit. Right now focusing on how I can replace the pre-installed OS's and see if that will be any better. I have years of experience in IT, but not in an area like this so it is slow going for the moment. I'd recommend this still, but be prepared to tinker a long time. If you want an out of the box experience ready to go then this is not a good choice at all.