CARTRIDGE:
Stylus Shapes
Advanced stylus shapes are best. (microline, microlinear, SAS, Shibata ...). They cost more, however they have longer life, so not too expensive in the long run.
https://sound-smith.com/articles/stylus-shape-informationFor MM, replaceable stylus, any phono stage, I recommend this one:
https://www.audio-technica.com/en-us/cartridges/type/moving-magnet/vm750shWide 30db channel separation, tight 1.0 db channel balance are both advantages for imaging
For MC Moving Coil, fixed stylus, higher initial cost, higher replacement cost, and extra mc amplification cost:
My first MC moving coil cartridge, I researched, asked advice, charts, circles and arrows and decided to try one. I am very glad I did, my cartridge choice:
https://www.audio-technica.com/en-us/cartridges/line-series/at33-series/at33ptg-2It sounds great, very involving musically, and it’s wide separation and tight center balance are the factors that make it preferable to my Shure V15VxMR with a new Jico SAS stylus.
saved $100. via eBay
https://www.ebay.com/itm/Brand-new-Audio-Technica-MC-Cartridge-AT33PTG-II-AT-33-PTG-II/264129989611?...................................................................
PNONO STAGE:
I had a phono stage I liked, so I used a SUT step up transformer, to get the small MC signal up to MM signal strength. Love it.
For you, I suggest starting with a MM cartridge, and get a phono stage that has both MM and MC. Many of these exist, however, they only have 1 internal load for an unknown future MC cartridge.
I advise a VERSATILE Phono Stage: MM and MC section with a few options.
I just found this one, I think I will order it for my office, which will add MC capability to my TT there.
https://www.amazon.com/gp/product/B08H2GPD7F/ref=ox_sc_act_title_1?smid=A2H1DLE1VLYNIR&psc=1 youtube review
https://www.youtube.com/watch?v=pBAdLY3Upboin his video he mentions their iPhono3, extremely versatile, but $1,000.
https://www.amazon.com/iFi-Phonostage-Preamplifier-Compatible-Cartridges/dp/B088SSSTPDLike I said, it’s fun learning about stuff, evidently they have been around, check out their product line:
https://ifi-audio.com/products/zen-phono/ ...................................
I found a few other VERSATILE MM/MC phono stages, posted them here
https://forum.audiogon.com/discussions/upgraded-turntable-is-my-current-setup-sufficient