I didn't switch to the iPhone 7 Plus. I have both the iPhone and Note 7.
I mainly use the iPhone to keep in touch with my kids and their elderly grandfather since the iPhone is easier for them to use. I do like how the Google apps on the iPhone function much better than on the Android. I like how well the continuity works with the iPhone and other Apple devices even when the iPhone is turned off (unless on Verizon). I use NumberSync with my Gear S2 Classic watch on AT&T which works good, but is not as good as the continuity of the iPhone. One of my favorite apps on Android is ACR call recorder. If the iPhone were to ever support such an app that does such an amazing job with recording calls, I could handle using the iPhone as my primary device. I like how the iPhone can function nearly the same on any carrier. Not having all the added carrier bloat and getting timely software updates is very good.
To me both the iPhone 7 Plus and Note 7 have some amazing functionality. They both have some unique features that would be great if ever combined into one device. I am heavily invested in both Apple and Samsung products and use either depending on the need at the moment.