Pro S is one of the Top of the Line knife sets in the Zwilling German made cutlery assortment.  What is unique about this set is getting a 5.5"  boning knife as one of the 7 knives in the set.  Usually a separate purchase, the boning knife is essential when trimming meat, chicken and pork.  It also comes in handy when segmenting fruit for salads or fruit trays.  Made to last a lifetime, this 10 piece set is a great value.