For me, just the right tray.

Look and feel are almost as good as Apple. The rather sharp, very thin body looks stable and high quality.
Very fast page loading, I use the device with a "physical" keyboard for Office applications.
The display is really sharp.
The connection with Smart TV, LAN, WLAN, network hard drive, etc. is very easy to configure, often does that by itself.
Sony has here made up 'a lot when I think about the complicated Smart TV software from Sony. Interestingly, the comunication between Samsung Media devices and this tablet works better than with Samsung tablet.
At the waterproofing I do not think. How are these small rubber strip caulk that you put in the sockets.
But why should I go swimming with a tray?
After the last firmware update of Accu now holds about as long as Samsung, that's enough for me.
I would buy the device again.