Pat,
If you're a true MacKenzie fan, I suggest a trip to Melbourne and playing Royal Melbourne, in addition to the other great courses in the Sand Belt. Two weeks well spent down under.
Barring playing all the courses of the ODG "in the flesh", writers greatly influence our opinions as to which ones were the best. There are certainly prolific architects, who happened to be in demand during the golden age expansion. Are we rating best on the top courses in each architects portfolio? Overall body of work? Influence on other designers? For most of us, we must rely on the written works of writers and historians.
With the advances in 3D technology, it would be interesting to convert old topo maps and architectral artifacts into a 3D video to "experience" the holes as they would have been when first constructed. I think there are some video games which attempted to do something with the original Augusta National course.