The question still is always: What do you want?

What I like:
-It Is in terms of size between the S4 mini and the S4.Das S4 was too great to me.
-It Has a 4.5 inch HD display. 5 inches are too big for me personally and the S4 Mini I was not satisfied with the lower resolution. 4.5 inch HD are perfect.
-It Has finally a Benachritigungs LED ... That I missed the S4 Mini.
-There Is dust and waterproof, and without annoying USB flap
-It Has 16 GB of internal memory. The 8GB at S4 Mini were quickly full and thanks to Android 4.4.2 is without root and the external SD card is limited writable.
Battery pack holds more than 1.5 to 2 days. But if the user is on board and abhängig.Ultrastromsparmodus helpful
-Apps Can be re-buried in the Drawer. (Abolished in S4 Mini with KitKat)
Direct camera Start Button on Lockscreen.Das not gabs at S4 Mini with Kitkat.
-Fingerprintsensor ... Nice to have, but I do not use it.
Toolbox, a little gimmick to selected apps to start directly from another application.
-Private Mode: Here you can hide or password-protect selected files. It is a version of abspeckte Knox, especially for the average consumer.
-Infrared Remote
-Kindermodus: For the little ones to entertain.
-Micro-Sim.

What I miss:
-The FM Radio from the S4 mini
-The Gallery app was better at S4 and S4 Mini. And the memo app., Also has been slimmed down.
-The Camera takes 8 MP only in 4: 3 format. 16: 9 there are only 6 MP.
-Wigets On the lockscreen is not possible.
-USB OTG is not supported
Also -Muliwindow nil.

Conclusion for me:
The device has the hardware everything I need and finally an Benachritigungs LED. Of the housing moderation could to display diagonals slightly smaller sein.Da makes the Moto X or LG G2 Mini
a better figure. But it is absolutely not acceptable.
The software is good, no stuttering at the time, many features (and, unfortunately, bloatware) .But there is still room for improvement.

If that S4 is too large (of the even greater S5 I will not at all talking) and the S4 mini always felt was: "Okay, but a tick higher with HD can do the trick," this is the place.
One option would be to wait for the S5 Alpha, but this has no SD card expansion slot and requires Nano Sim

small update:
The Gallery app is not as varied as first thought. Can images thus also move to other folders, etc., thought at first that this feature was missing. Whether it is packed with the recently published update it, I can not say. But the main thing, it's like the S4 Mini :-)
Battery is now trained, get along well, 2 day use. Until the battery but reloaded, but it already needs well over 3 hours.

--- Update 10.2014 ----
Unfortunately I had to send the unit, as it has now and then just hung up and only recently was belebbar battery remove. For someone like me who has to rely on the alarm clock, an uncertainty factor (unfortunately so once sleepy). I would keep the theme in mind .... can imagine that it is a software error, which is based on Knox.
Furthermore, I have the feeling that the device can be optimally charged only with the original power supply. With my car PSU for example and switched Navi supply was more bad than good.