I lost my phone (iPhone 6S Plus), and my insurance is paying me out. I need to replace it. My line is also due for an upgrade towards the end of the year, so I'll most probably be getting the iPhone 8 (unless it's a total disaster). What do I get as a replacement now? Whatever I get, I will most probably sell on once I get the next iPhone. Do I get another 6S, or a 7?