I have noticed that there are more than one type of SABER (a hard blade and a flexible one), which one is really drived for Tai Chi Chuan ?
I also found two types of handle, one with a rounded guard (as in katana sword) and other with a cross stick guard (as an arabian sword).
As I am just starting to study DAO,so I really don't know how this differences should influence in the form exectution.