Chris,
What are the negatives you found at Turnberry?
Mike, while I didn't love Turnberry - I did enjoy my two rounds there. Other than to see the changes that Mr. Trump is completing though, I don't think I would rush back to see it. In fact, if I had two days back in that part of Scotland, I might spend them both at Prestwick, and skip Turnberry all together, but that is just my preference as it relates to golf courses. At the same time, after having just completed a 10-day trip to Ireland, I can think of four courses from that journey that would easily place above Turnberry on my own list - Ballybunion, County Down, Portrush and Lahinch. I haven't completed a similar exercise as yours (maybe I should), but I don't know if Turnberry would fall in my top 20, and we have played a lot of the same courses.
My initial reaction to your list wasn't that Turnberry was #1, because Turnberry could be #1 on a lot of peoples' lists, but rather it was #1 on a list with a lot of good golf courses below it. As it relates to Shoreacres, I was really surprised to see it so far down your list, how long ago did you play it? As there have been some recent changes there over the past few years.
Don't take the feedback too hard, everyone has their favorites and GCA tends to attract some like-minded people when it comes to discussing architecture, and one thing we like to do more than actually discussing architecture is to discuss rankings...