RN4 is the best and most powerful device in its budget
I am using the 3Gb varient for 4 months
Its just Great gaming is awesome
All heavy game such as Asphalt 8 , Modern Combat 5 , D-Day etc work with out any lag or hang
Battery life is great too
I usually charged it at night and get 7 to 8 hours of screen on time
Only one disadvantages is camera
Camera are better then Redmi Note 3 but not as per moto