Coolpad Note 5 is far better than Meizu M3 Note except one thing, i.e., it's processor. Coolpad Note 5 has Qualcomm Snapdragon 617 which I think is it's only con. Coolpad has heating issues while playing games(small size games like temple run as well as big size games).
Both the devices have similar specifications, Redmi note 3 should have better camera performance both primary and front camera. My friend has redmi note 3 and it is a great device.redmi note 3 vs j7 prime