Share your experience!
Definitely use stamina mode - doesn't impact the use of the phone, but results in a full day+ of use (obviously depends on how strong your mobile signal is)
Hi @wk24, welcome to our community and congratulations on your new Xperia XZ! 
I'm really happy to hear that you are satisfied with your new phone.
If there is anything you are curious about or something you might need help with you are very welcome to create a topic here at our forum and we will do our best to assist you!
@jryoung, That's a great advice, thanks for helping out! 
Have a great weekend! 
some usefull links for you guys
http://talk.sonymobile.com/t5/Xperia-XZ/Need-more-Tech-Specs-Xperia-Whitepapers/m-p/1176218#M1803