I have played around 40 courses that have received at least a 7 from one reviewer on the Doak Scale including a number of 8 or above. So mine is not a huge sample, but it is not insubstantial. In thinking about 18th holes, there are only a few on the courses I have played that I consider truly outstanding (Waterville, SS Blue, Brora, maybe NB because of how it fits the course so well). There probably no bad ones (not even CPC). But a couple of my personal favorite courses (Lahinch, Bandon Trails, and probably even PH2) end up on a bit of a down note compared to the rest of the course.
Curious as to the perspective of others and how Architects think about the question.
Thanks,
Ira