Does the "World's Best Cartridge" the term adopted by the OP, and the OP's references to their other experiences of substantially expensive Cartridges.
Suggest that in their assessment the Cartridges that are seen to be coming in $10/£12 - $25/£30 per replay, if using a 1000 Hours of user life is the guideline, are the Cartridges to be considered only as the 'World's Best'.
As most users of HIFi equipment buy in a price range they are comfortable with, most users of the Vinyl LP as a Source, would not be in a position to comment on such an item that incurs this type of cost.
I am well-Travelled in my attempts to experience new encounters in HiFi, where the creating a broader knowledge of the equipment used in a Vinyl Source has been the goal.
In relation to having experienced a TOTR Cartridge from a recognised Brand with a growing reputation for their use of Technology, I will suggest the DS Audio Grandmaster used in a System that has approx' £200 000 is the most expensive Cart' I can put a price label on.
I have heard TOTR Cart's from other Brands and know I have heard Lyra's and Transfiguration Cart's in non-owned systems.
More interestingly for myself, is that using subjective listening an assessment method, carried out on non-owned and quite different built systems. I have not discovered a Cartridge that stands out as unique and must have, even though the possibility is for some, that they would not fit into a Cartridge Budget allocated by myself.
There are other questions as well, what actually qualifies a Cartridge to be given a Tile the 'World's Best' or even the Title 'Contender to be the World's Best'.
If subjective evaluation is to be the assessment parameter, as it seems to be for the OP, definitely for myself, and I am sure multiple others with an acquired experience.
The outcome of selections is looking likely to be quite varied across contributors.
One other criterion, that would also need to be added into the assessments being made are the control measures for the consistency of the report.
Are all assessments undertaken using the same supporting ancillaries?
Which prior experiences undertaken by the assessor, would deem the assessor qualified to make their evaluations being made known to the Public, to have any credibility.
Which would be the selection of supporting ancillaries for the Cart', to be used in conjunction with, are the ones that can be agreed on, to ensure there is a fair evaluation being undertaken.
Due to the function of the Cart', environmental impact can be considerably degrading to the Cart's function. Which are the ideal environmental conditions, to be present when making an evaluation.
My experiences to date, have shown myself that the most engaging and desirable experiences that have proven to be very attractive, are when carried out in a home, where a system has been built over many years of devotion and the choices made for particular devices and their mounting, have undoubtedly been correct for the Set Up in that unique environment.
I have been fortunate to have heard Cart's with values of up to £5000 in these types of conditions and have been thoroughly impressed.
In my experiences, I could quite easily live with a Cart' experienced from these encounters.
In my limited experience, it is not too easy to see where a Three - Fivefold increase in Cart' purchase value would offer a more engaging experience and stand out to the level where it justifies the extra expense, if I am using the recollection of other attained experiences of a more expensive Cart'.
I'm leaning towards @nandric assessment of the contributions and will add that in general the human has to offer some kind of purported reasoning for a made decision, especially when associated with the action of making a purchase that is encroaching on being one that is an absolute luxurious acquisition.