I am using the Redmi note 3 for 3 weeks and I have to say that the phone is awesome.
It has an incredible battery life giving me up to 4 hours of screen on time and I would charge my phone once in two days according to my usage.
The performance is also awesome.But the dis advantage comes in the part of the camera.
The camera is average but will perform good in day light or natural lighting, but fails to perform good in artificial or low light conditions.It charges quick as compared to other phones.