You know what convinced me Nev? I googled " problems with 2016 Expedition" & "problems with 2017 Expeditions" and read those "reports" showing multiple pages of ZERO issues.
Then I came back to this forum I had joined a couple years ago and read through page after page after page of no issues with the 15-17 models.
Forums are a great indicator because people will always go to a forum and list their problems looking for help.....and there were simply zero issues labeled as being for the 15-17 models.
That all convinced me to buy my 3rd.
I understand that DL and some others want the '18 and maybe waiting works with their family timetable for replacing what they are driving now but in my case, my truck had died. I hadn't paid much for it and sure wasn't going to make a "boat"(hole in the water to throw money into) out of it so I HAD to replace it. My only decision was to buy another used one or a new one. It took me weeks to get behind the idea of having a payment again after nearly 10 years without one.
I hope that when DL and the others get their new '18's, they run perfectly for years & years for them....who could want less for someone? They will gain the advantage of having the newest rendition of the 3.5 along with the 10spd tranny and the added tech....hopefully the price will remain or at least not move too much higher but I still love my '17 so really, there are no wrong decisions, at least to me.
jeff