Nice nice phone. I don't regret it!
Battery
Battery standby is extreme long. Tested it: in 12hours lost 3%. (Wi-Fi and Mobile Network was permamently active in my test)
But the active display standby is ~~~ lame.
Its got bit warm than my one+1 but it's ok.
Chasis/Design
The Chasis of phone is real AlMg. You can brake someones nose with that (not tested!

)
It feels good in my hands, a bit heavier than one+1
Buyed with Kevlar StyleSwap Cover. Too bad, it's not fitting perfectly

but it sit.
Sound
Speakers are louder than my laptop speakers. Clear Sound, no scratches heared.
Speed test and stability
Fast app start, smooth scrolling, switches fast between the apps.
Antutu Benchmark test:
Test run fine with over 55fps average.
With fully installed apps, games, tools etc..
Benchmark result: >58000
Camera/Video
Photo quality is very good. Takes pictures faster as one+1 and in good quality. nothing to say negative about it.
Videos are in good quality too. You can take slow-motion videos too (720p with 120fps)
SD Card
It's a bit faster as in one+1!
~3451MB (28183 files) Recovery backup done in 74 sec.
64MB/s Read/Write speed.
For a phone with 64GB internal memory it's enough speed.
Well. That's all importand tests i have done. If i have missed something, write it down here. i try to answer.
EDIT:
Very easy to unlock bootloader. Same way as in one+1.
Done it in under 5 minutes
On my old phone it was a real ass-disaster... (Xperia S) Never ever again