All, thanks so much for your replies - great information. Allows me to sleep a little easier as I do really value the craft & playability that goes into vintage frames.
Thread started for me as I met a tall & lean super senior (you know those types - covers the court in a few steps) who played a great game with a couple of Head Graphite Directors. He relied on them and told me that every few years he would just pick up a new (old) one. Well, we compared new (old) Head frames and I admired his compact and exact game - those Directors were put to good use.