I ordered an iPhone 7 (not the Plus) two days ago and it should be here early next week. I will put 10.3.x on it after it arrives and I back it up. I think it best to do that before I start populating it with my apps, data, photos, etc.

I like my 6 Plus and I will keep it as a backup for now, although I still have an iPhone 5 that I kept as a backup when I got the 6 Plus. But I got tired of the big screen on the Plus and decided to go with the 4.7" screen instead. Almost went with an SE, but I took out my iPhone 5 and played around with it for a while and decided to pony up more money and go with the 4.7" screen rather than the 4" screen. Actually I do like the big 5.5" screen on the Plus, but I don't like carrying such a big phone around.