I'm switching from the iPhone 6s plus and had some concerns after the first day. I'm starting day 3 now and I'm really starting to like the Note. It's normal to try and use android like you use the iPhone but it is just different and you need to give it at least a couple weeks of daily use to see if you like it.
For me, the display is better and bigger, it is noticeably lighter, and it is easier to hold for one handed use. The camera is amazing. The battery is not as good as the 6s plus but it is pretty good. Of course, if been setting it up since I got it so once I'm done with that, I'll see what normal use will be like.
I use Google for my email, calendar, and contacts so no issues with moving that over. Apple Music for Android is really good. BTW, the rest of my family are on iPhones and we have Apple everything. IMacs, Macbooks, iPad Pros, Apple TVs, Apple Music family subscription... needless to say we are all in on the Apple ecosystem. That being said, I think the Note7 will work for me.
I haven't even played with the S-pen yet. I'm on T-Mobile JOD, so if the iPhone 7, is not great, I'll be sticking with the Samsung until the iphone 8 next year.
Give the old college try before you switch back.