Funnily enough I've just been reading a review of this phone:
http://arstechnica.com/gadgets/2014/...-and-unlocked/
It got a good review, but I'm surprised you've been able to get one - it says in the review that you need an invitation before you can buy one.
Apart from that, it looks a solid (even a bargain) smartphone from a Chinese company looking to expand in the west. Highlights include a big screen, great battery life, low price, and the use of CyanogenMod as the default OS.