Well it's depends on your use .
I'm using moto x play now.
But i have seen features of Moto g4 plus .
All the features of moto g4 plus and moto x play are same.
Moto g4 plus come with some new features like fingerprint lock, better camera experience ,turbo charger.
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Just press and hold the volume down button and the lock (power) buttons on the right side of the phone, until you hear the camera shutter sound and a flashing animation on the screen. The screenshot will be stored in the screenshot directory of your phone. On the Moto G4, this is in Apps > Gallery > Screenshots
Sai Ram Kohli