So how many use MM cartridge and intend to keep it that way ?

Sad about the price of the ZYX Universe series.  The original UNI was about $4500 in the US.  Then the UNI II was introduced as the new greatest ever, for about $8000. Now we have UNIs with really complex suffixes, for around $9000+.  I bought my original UNI for about half its original cost, $2000.  It's the most I have ever spent on a cartridge, but I do feel it was worth the price.  However, I am not a buyer for the $9000 version.

IMO, Every single cartridge brand and type, regardless of how it works (MM, MI, MC), sounds at least a little bit different from any other cartridge.  Whether that difference is worth worrying about is subjective.  Among the different types, I have found, thanks to Raul et al, that I prefer MM and MI over all but a very few MCs.  ZYX UNI is one of those MCs I like a lot.  Funnily because it displays some of the best qualities of MM/MI.

Inna, Makes sense to me to have four turntables, actually.  But I am nuts.

I am raising my hand.
But I also run a ZYX UNIverse and love it too, on a different turntable.