I still think the note 5 is the phone I'll keep for a long while, but that Sony z5 premium is a beautiful looking headset.
I have no doubt the iPhone will sale in droves. Apple could not release a new phone for 3 years and it would still sell, because it is an iPhone.
That being said, this may be the year that we don't see an area were the iPhone outclasses the competition. For example, the only thing it should have over the note 5 is force touch, yet the note 5 has the spen.
With hardware like the note 5, z5 premium, and the rumored larger nexus....its all very compelling.