From personal (okay lewm?) experience I’ve learned that some combinations stand out, sometimes when you least expect it to. The sound has an intrinsic rightness, as if there’s some kind of electric handshake. In my system(s) the Ortofon cartridges I own behave like this every time I connect them to an SUT.
Several cartridges, phono stages, tonearms here too (LOTS of headshells and arm wands on hand) -- and what you've written really gels and resonates with my experience! Without a SUT I perceive Ortofons as dry, lean, and lacking passion. With a SUT - they're still not a Koetsu but sometimes really surprise me and "hit the spot". The Windfeld Ti is probably my most "hot and cold" cartridge, but for last session at least, it was very hot!
The Blue Lace on FR64S is my unimpeachable Reference. It's always, consistently great -- so it's not knocked about by the ebb & flow of my transient preferences and moods. The various Benzes, Shelters, Ortofons, and other Koetsus are constantly undulating up & down in rankings (relative to each other) with my affections. There's always ONE of these that makes me think "I like this as much as the Blue Lace!", but it never lasts for long lol.