My writings on Cart's and conditions that MC Cart's are able to develop in general are to be informative, there is nothing didactic about my public interface on the subject.
I do not have an opinion on how a Cart' is to be built, if the End User has found their most enjoyed End Sound through a Cart' either OEM original spec' - OEM Refurbished (equivalent parts used) - Third Party Refurbished (equivalent parts used or non equivalent parts used). My own experiences have exposed me to all the above, and certain opportunities have been taken to evaluate a Particular Brand / Model that is available as all the above, where they have been used on the same TT > Tonearm. Where the end results were very educational. My assessment being that if a OEM original spec' is in use, for not too much extra monies, it can be substantially improved upon.
Additionally if the Brands upper in the range models are added to the comparison, there are very attractive similarities easily discerned from a lesser model treated by a Third Party Service as the comparison Cart'.
What is a constant and what I do like to share, is that an MC Cart' exposed to the typical listening room environment, from the outset of being put to use, commences collecting contamination Under the Hood.
The Cantilever, Armature, Damper, Coils commence to become overwhelmed with a build up of differing particulate that can only be deemed a impediment to being an optimised performing Cart', when the build up het to a certain level.
I am aware, that Coils have shorted as a result of airborne metal particulate being a material collected and is contaminating the windings.
I make this known, because the conditions being made known are usually at a level that can impede the Cart's optimised performance, prior to the period of the typically suggested 1000 hours. Which is when a Cart' might be considered needing a inspection.
I encourage a MC Cart' owner to consider have their Cart's cleaned between 300 -500 hours of usage, if keeping the Cart's optimised in performance is the goal.
As stated many times the benefits of the clean will be easily realised, combine this with a situation where a tension wire is treated to return the Damper to optimised, and the latter half life of the MC Cart' will prove to be quite special.
Individuals spend big on their Cart's that have no protection from the above occurring. Why not spends a little mote during the Cart's usage life to keep the investment made at its very best optimised performance??
I can only see such a suggestion as a valuable info to be a consideration.