gotpasswords, your Henckels info is a bit off.
Professional S has the rivited handle, this is what I own
Four Star has the molded handle, in a standard shape
Five Star has the molded handle, ergonomic shape
They do have the same blade technology, apparently made of 2 pieces joined together at the handle, unlike some blades (Wustof) that use a single piece of metal straight through. I’ve heard that a Henckels blade can break if dropped at the right angle.
I like my Henckels blades, but I need to get them out to a good sharpener, my home sharpening isn’t getting the job done. As a result, I only really like my 6" chefs knife, since it’s got the best edge of them all.