The in-laws are in town, so I'll post a legit review in a few days.
This phone may easily be the most premium, frustration free, fluid phone I have ever used. Name a top of the line flagship in the last few years, and chances are I have owned it for a reasonable amount of time.
Honestly, this is the first phone (besides for the lumina 1520 I owned for a few weeks... But the app situation, rough) that tops the iphone in all ways I can think of so far. The screen, feel, camera, speed, stability, etc.
The battery life is superb so far as well.
Word of caution, I downloaded package disabler and disabled a few things yesterday. Mainly tmobile bloat, a few included apps, and the Samsung email app and sync. I am not sure if it was that, or a weird system bug but my phone wouldn't sleep (cpu spy can indicate this for you. I have included a screenshot below from this morning, with the problem fixed). I reset the phone, and now it's sleeps almost immediately, better than my past s6 edge, g4, nexus 6....you get the point. I think it is likely Samsung tweaked the software on board to trigger a quicker entry into sleep, in order to get better battery. It's similar to how an iphone operates.
I am running with everything active. Google location history, Google now, Facebook, Twitter, etc. No battery saving steps taken since my factory reset last night. I also haven't disabled anything beyond a few tmobile apps.