The performance (last Antutu test with more than 45,000 points) and the optics are simply superb. To save the battery I have (to adjust at all very strong thing the resolution) shut down the screen to HD resolution and for me I can not tell the difference in the Bildquälität.
The battery I come as a strong user well during the day, from time to time to get even 1.5 days.
Currently Android 4.4 with 3.0 EMUI it, which I think is inspired by strong to the Apple operating system: -D
But even that I find great .. the missing app list I miss absolutely not, the apps I need I lay me anyway on the home screen and all others I pack in the folder and is well :-) and through the various design possibilities never comes boredom on, I change almost daily between many verschiednen designs.
From me a crystal clear buy recommendation ... HTC, Samsung, Sony .... bye bye: -D