Michael,
Nairn is a good golf course, Castle Stuart and Royal Dornoch are much better! When I went to England and Scotland 8 years ago and mentioned Nairn, everyone got excited about the condition of the greens, and claimed they were the best in the UK. As David said, most of the course is on flat property, and does not inspire your imagination as many of the courses in the area.
Another part about Nairn, and I could be way off, but it felt neither a championship or charmer. Just a solid golf course.
On my last trip to the area my group played Brora instead of Nairn, and we all loved it! and would go back to play it in a heart beat. For me, there are to many other courses to try before wanting to go back to a course that did not stir my soul.
If in the area and you have extra time, go play...
chris