I am still undecided if I like the Moto Z3 more or less than the Moto Z Play I had previously.
The screen on the Z3 is larger and looks great, and is in the same size phone, well the Z3 is a little lighter and thinner, so that is a plus.
It does seem a bit faster, but that may also be because I was on an older slower phone the last five months.
The new camera has some neat features.
BUT
The battery does not last as long (but still lasts more than all day)
There is no headphone jack (have to use Bluetooth or usb-c dongle)
There is no front-facing flash (because the screen is larger)
Radio does not seem as good (drop down to 3G sometimes, or cellular data is slow)
I do not recall any of those issues with my Z Play.
We'll see if the Android 9 update improves things, it will hopefully be out for the Z3 soon.