I am using xperia xz premium from past ten days.it is the best phone from other sony mobiles.let me detailed below.
Pros.
Good looking.
Great sound.
Great battery.
Faster access with fingerprint.
Octacore processor.
Build quaity.
4K display.
Cons.
Gets little bit heat.
Slippery.
But overall the phone is best to use easy multitasking and more fun.