7 Plus 256 GB (using 30 GB) space gray since 16-Sep 2016 (launch day). Plan to get X with no preference for size or color since they look the same from the front.
iPhone 7 Plus. I've had it since September or October 2016. I don't have any plans of upgrading my phone until I see what Apple does next year. I think eventually the iPhone X design will be the only design, and come down in price significantly.
6. Still running well, no real need to change but the 8 is really tempting me. Having a hard time deciding if it's the right thing to do and if I do I'll have to explore opting for enrolling in the upgrade program. Can't afford it outright.