I had one or the other high-end smartphone in the region 400-500! Conclusion! None of which was felt (!) As soon as this! The reason will probably be STICK Android. On most (high-end) devices, manufacturers play on vast quantities of bloatware. In addition, often the changed GUI.
The only drawback to the device: The rising ringtone, which you can not leave. Until the machine stops, the caller has already hung up often. I hope it comes soon a hack or manufacturer nachhilft.