Hi all, hoping to get help from the hive mind. I'm in need of another iPhone for my middle kid in the next month or so. My wife and I are both on ip6 and need new phones but are holding out for the 8/whatever. Since that phone won't be out till after I need one for my daughter, i am going to buy something on swappa for the short term and either give that to my daughter or use it myself and give my kid my 6. I'll probably resell whatever I get after the 8 is released or keep it and sell our two sixes. Which phone will likely hold the most value after the release of the 8? Not critically important, but what would you buy and why?