Not sure if it is Shelter or Zyx - but one of the highest models choose an aluminium cantilever over a boron one on the basis that given the other design parameters it is the better material. I don't think that it's as simple as just one item alone.
Boron Cantilever and Ruby Cantilever, Why Ruby?
I have noticed that many of the better cartridges use Boron cantilevers. I know that Soundsmith uses a Ruby cantilever. I was thinkin of having my Benz Wood Body cartridge retipped but was not sure if the different material used for the cantilever will impact compliance and even sound. Why not boron like the original?