As a Christmas gift for my wife I purchased a 10 piece "Forged Block Set" of Henckel knives from COSTCO for $169.00. I then went to Macy's and bought a 6" Henckel "Professional "S" knife. I've googled J.A. Henckel AG to try to find out what the "Professional S" designation means but can't find anything. Does anyone out there know? Also should I take the 10 Piece Forged Block Set back and buy the Professional S knives. They are more expensive and available on EBay. What's the difference?