That's right that "shutdown & start" decreases battery, but long sleep gives me problems like slower wifi or unstable, slower apps, lags,...
I think it depends which apps/widgets you have.
We use multi-users.
The tablet is not rooted, everything is "Sony official" (not like on Xperia S that needed to be... refreshed).
Envoyé de mon Xperia S en utilisant Tapatalk