I've had the mini for some months now & I really like mine, especially since I safe rooted it to avoid the KitKat update, and killed all the unwanted, unneeded stuff running behind the scenes. It runs better, battery lasts longer, and it only does what I want it to and nothing else.
One of the main complaints often made about the KitKat update is excessive battery drain. And that's just one of the main complaints. But you how the internet is, complaints tend to outpace compliments by a large degree. Normally I'm on board with OS updates, but in this case I decided I like my Mini just as it is and for now, I don't care to be forced to update when, as far as I'm concerned, there's nothing wrong with my phone. All of the apps still update, just not the OS.