Mine arrived on Tuesday morning to replace my htc one which I loved dearly but the upgrade to the m8 was too small in terms of features so I chose the z2
So far this is the best phone I have owned,battery life is staggering I managed two days on a full charge using sat nav, three exchange accounts active and that first day fiddling you do when all new phones arrive.
Camera is way better than I had expected even in low light.
Memory slot is a godsend coming from the htc with 32Gb to this with 16GB internal.
It's fast very fast in general use.
The biggest bonus seems to be the signal reception, on my other previous phones, iPhones,htc one my reception was poor to non existent at home and I had to be in the right spot to make and receive calls, not so with this it's like having a external antenna.
Maybe the metal back on the htc doesn't help or the fact that the iPhones use the metal band around the side, for any of you in poor signal areas I recommend the phone purely on this.
Down vote time
I still don't get why people buy iPhones,the world of android has so many awesome options like miracast, throw to screen, customisation and roms, I would never go back to an iPhone after having used android for a year.