All of which only goes to show that two golfers playing the same course can wind up with dramatically different experiences!
Mike, I really like the New Course, but in my (quite considerable) experience I never found the New Course to possess a much faster pace of play than the Old Course, never mind Dornoch. I don't doubt that your experience made you feel the way you did, but there you go. I've never played Dornoch in more than three-and-a-half hours. (Of course, I've never played it in the summer, either.)
Holes I really enjoy on the New course: 3, 4, 5, 6, 8, 9, 11, 13, 15, 18. It's a fun course, and its reputation suffers from proximity to the Old. But I wouldn't call it "one of the great golf courses in the world"...there aren't any really outstanding holes, and IMHO the quality of the linksland isn't as consistently good as your superlatives imply. Glad you liked it, though!
Cheers,
Darren