Just ordered a nexus as well. I lapse every year or so. This time it's google services that's driving me back to the Nexus.I tested the iPhone 6s+ for 24hrs and IMO, it's just another iPhone with 2GB of RAM; which isn't a bad thing.
The 3D force touch is a nice implementation but it falls short, I feel. Maybe after a year--or with iPhone 7--when more developers implement it, it'll really be worth considering.
Live photos is also cool but just doesn't feel like it's there yet.
Anyways, back to the Nexus.