Follow up question to my original question. I don't really plan to race nor ride fast with whatever old bike I end up getting.
My Fuji Gran fondo even with it's relax endurance geometry is pretty fast specially when I drop the stem all the way down the spacers.
That said, when did the "relaxed" or "endurance" geometry emerged? Do old models vary a lot in terms of geometry like modern bikes do or they are more like the racing geometry?