Dear @mglik : Congratulations for those both new cartridges you own.
Your question could be controversial because any cartridge quality performance levels depends on with what kind of quality analog rig ( inlcuding phono stage. ) is surrounded and depends too of each cartridge owner skills for its accurated overall set up.
Cartridges as yours or coming from VDH or Ortofon or Koetsu or the Etsuro or, or, or,... are the best for its owners but at the top cartridge models in reality I agree with @mattmiller : no best but a little different. Every one of us have our own and very specifics targets and priorities with MUSIC/sound reproduction.
Btw, maybe both of your cartridge could be best " serv " by a different tonearm and obviously a different better phonolinepreamp. At both sides you will experience better SQ with both cartridges that the one you are experienced rigth now.
"" To begin, putting the stylus down on the run in grove there is dead silence. As well as the groves between cuts. This silence is indicative of the purity of the music content. ""
Well that per sé means almost nothing for your cartridges. Rigth now I have mounted a LOMC vintage cartridge made by Sumiko that perform exactly that way in that precise issue and not only that this Sumiko is really good and @dover that’s a " delicated " experienced audiophile knows a lot on it.
In the other side, Grado was not the one with the first MC patented principle but Ortofon in 1948 way before Grado existed.
@lewm , you are wrong Nagaoka is not a MM design:
https://www.nagaoka.co.jp/item/cat/record/
https://www.nagaoka.co.jp/product/diamond.html
Regards and enjoy the MUSIC NOT DISTORTIONS,
R.