My experience is that SS offers the premium options of an L3 upgrade(ruby cantilever with optimized contour line(OCL) diamond), or an OCL diamond glue-bonded to the stock Lyra boron cantilever. Based on SS recommendation I chose the boron option for my Helikon. It ended up costing $550, as compared to $350 for the Ruby/OCL option. The retip sounds good, but I have reservations about the rather large glue-bond on top.
