Anybody out there re-cantilever their cartridge with a Soundsmith Contact Line diamond ?

Cartridge Nazi? Heh. I guess you're offended by my Zyx comment @tooblue . Actually I would just prefer to have Mr nakatsuka work on my cartridges if possible and he won't touch them if someone else has worked on them. I'm sure your SS-zyx sounds wonderful. They do know what they're doing 

@jollytinker, my comment wasn't meant for you, apparently you haven't met the intended target.

For me, the most significant information in the cited post by J Carr, who does know about this stuff, is that the cartridge is a closed system made up of parts that have been selected to work well together, or at least according to the designers idea and ingenuity.  If one wants to preserve the SQ one paid for in the original purchase, one is well advised at least to stick with the same cantilever material and stylus geometry as per the original, when re-tipping.  Thus, for example, one ought not to install a boron cantilever in a cartridge that was originally designed with an aluminum cantilever in mind.  This is according to J Carr's post; I have no dog in the fight.  So also, if one believes that the ZYX boron cantilever is unique to ZYX and cannot be obtained through the services of any after market re-tipper, then one is obliged to go back to ZYX for the re-tip.  I wonder if the same can be said for Koetsu.

In general, I agree with whoever said that there is a very finite choice of companies that make cantilever/styli.  So in general, but maybe not always, all the re-tippers must work with a very few suppliers.  Perhaps ZYX and some others are exceptions, because it certainly is possible that such boutique companies have exclusive deals with the few suppliers in existence; that's why they get the big bucks.