I'm on a Note 5 and I have a 7 Plus on order. I was debating between getting the 7 Plus, Note 7 or the new Nexus/Pixel XL. The Note 7's issues and eventual discontinuation and the Pixel's Verizon carrier exclusivity made my choice for me.
I get what you're saying about being underwhelmed though. I don't have my phone yet, but at the end of the day, iOS is iOS, and that familiarity is either a positive or a negative depending on the person. Like you two, I switch been iOS and Android almost yearly, so there a few things I'll miss.
Specifically, I'll miss the ability to place apps wherever I want on the homescreen, rather than having that mandatory grid. What's the point of customizable wallpapers if you can't see them?
I'll also miss the frequent Google Rewards questionnaires that give you Google Play credit, as it gives you more incentive to just try out new apps on a whim since you aren't really losing anything.
Lastly, I'll miss VR. I wish Apple had a VR solution, especially since their phones perform better in gaming than Android phones.
That said, I'm excited for dual-lens camera, and I'm happy to be back in the Apple ecosystem. I can finally use my Watch again.