This does indeed look like an amazing device and having just recently purchased a Xiaomi Redmi 1s for my son, if the build quality and UI on that is anything to go by it is going to be the tablet to have for the power gamer.
The only downsides are that these products sell like hotcakes when they are launched in China and the company is commonly referred to as china's version of Apple. Also sourcing one can be a problem as they only sell in China and singapore/Malaysia at the moment I believe, so import tax and risks are greater than buying locally. It is getting better with some european ebay shops now setup and running, but the attractive pricing gets hit a little.