ZYX Fuji vs. Lyra Helicon

I believe you, when you write that in your System sounds best with a xyz load. It is in a way System dependant,
when I go down from 47 k ot let's say 100ohms I can NOT hear some Details I heard before.
They are gone. And the presentation became slow, more dull, out of life and air.

Lyra made all carts for 47K ( from design ) and later, when they were in the market, they saw, they have problems with their recommendation for 47k only, because there are not much phono stages out there, which can handle that in the best way. same politics for High Output MC's, btw.
Life is much easier for all with a recommendation from 10 ohms to 47k ohms. It is very good for sale and the dealers recommend them faster ....
Well, I used my Lyra's with 47k, here they sounded best in my System. I remember a Importer recommendation ( some years ago ) who told me, to go for 47 K when I have a good phono stage which is silent ....
Anyway, fun counts.

I think, too, the Helikon is a good cartridge.
Based on the big differences with quality of a Phono Stage and the load it is difficult to give a final Statement.
The Helikon is made for 47 K, like all Lyras.

From the musical presentation I like the Zyx cartridges, they are not ultra analytic and dry like some others, they are more in a natural presentation. I like my 1000 for example very much.