I am a coach. Have 4 pairs of blades. Ls4, Stepsteel stainless and Black stepsteel, fairblades too. Also do sharpening in my club and my boy who is 13. My advise would be unless you need a spare set of blades do not bother. From my personal experience you do can tell the difference but it is not relevant. The more important is to have a right profile and good quality sharpening.