Should I buy Nubia Red Magic ? or Must Choose another Model ?

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Hello
I want to buy a new phone and my budget is almost 400$
I am confused Between many phones but I liked Nubia red magic
What should I buy?
In Chinese stores I found the price of red magic
380$ for 8gb ram version
318$ for 6gb ram version
But this price for CN version . Is it possible to install the global rom on it?
Is this phone a good choice or must go to another Model ?
What about performance in Apps and games?
What about camera and the quality of the pictures and videos?

using Google Translator