With what this phone has, it is excellent. The cons would only be what it lacks like fingerprint scanners, front flash etc.
I think the Moto G3 turbo is better in value for money bearing th 720p screen. Internal wise the X Play has same as Mi4i but X play simply outperforms the Mi4i.
You should buy this phone if want the perfect overall without unnecessary add-on features like alert slider and all which are even a requirement.