After using it for over a month I noticed that it has much better build quality than the other Chinese mobiles.it has some great features which is not available in other phone like blink selfie etc.I think the sound quality is low but it is manageable if you often use earphone or headphones.front camera is nice and rear camera works better than a 13 mp camera in other phones.
Overall its your decision, but I think you can try Panasonic once, it will not disappoint you.
Thankyou