Have been using moto g3 for the past one year. No problems till date. I will list few pros and cons about the mobile.
Pros:
Latest android OS ( Marshmellow)
Smooth performance ( No hanging) due to nice RAM capacity
Charging sustains a full day
Effective Action Gestures for Quick photo capture and Flashlight
Excellent back cover with matt and groove finsih which gives a good hold on phone
Great looks
Dual flash
Cons:
Camera quality could have been better
Mobile heats a bit with a heavy daily use
UI is average
Bit weight
Overall within this price range, Moto G ( 3rd Gen) is worth buying mobile.