Here I am going tell my experience with leEco le2 model.It is cheap and best product.
The battery is non removable and provide with 3000 mAh li-ion.I tested the battery performance with a video loop, it comes about 11 hours and 58 minutes(continue playing).
Now a days people are choosing which mobile gives best picture quality.It provide 8 mp front camera and 16 mp back.
The picture quality is high.The device support 4G video playing.
The disadvantage of this mobile is heat, only gives when on charging and playing high graphic games with minimum of continuous playing about 2 hours.
One more disadvantage is no expandable storage.it provides 32 GB internal storage.
In my view it is best for value for money.If you want such specification you will pay minimum of 20, 000/-.