I'm not off topic. You told OP that buying a Note 4 wouldn't be a smart decision because your older Note 2 didn't have very good battery life.
I merely showed him(and you) a review that a reputable company did of the Note 2 a few months after release and the battery was fine.
We are still discussing about the Note series here. And I still stand by my decision, I recommend Note 4 to the OP anyday.
But a simple way to end this, OP can get whatever he wants, the Lumia 1520 represents the best that Windows Phone has to offer whereas Note 4 represents the best Samsung has to offer(and somewhat Android as well).
There are advantages of choosing Windows Phone over Android and vice versa.