In the two weeks that I use now, I noticed positive:
+ All applications run absolutely smoothly and flawlessly (processor speed for me perfectly adequate).
+ LTE ensures fast Internet connection.
+ The S4 mini is beautifully compact and even "pocket Suitable"
+ Overall, the smart phone makes an impression of quality (up to the back cover; see below).
+ Display due AMOLED with beautiful view / color rendering. The relatively low pixel density falls (I) used in practice not on.
+ Additional memory via micro SD card possible.
If you want to expose anything at S4 Mini, it's the smooth, cheap-looking plastic back cover (and I'm really not Materialfetischist ..). This could have been a better solution; for example at least corrugated surface, as in S2.
My conclusion: with the Samsung S4 mini gets you a total quality smartphone that all smartphone applications allow properly for the "normal user". The current price of around 200, - is this product more than justified (actually almost too favorable, but since we want to complain not even ;-))
