I just ordered an 18' today and is $800 more than the '17 I configured about a month ago, I hope it's worth the difference although what are you going to do, it is what it is !
Its not even a question , of course its worth it , the 17 will be known as a first year model , always an issue , its a year newer. And who knows , maybe its actually better now that they have had time to sort things out. No way id pay the same or even close for a 17.