Greetings 35off, You have a great and somewhat rare turntable and arm combo that's in the top of the vintage direct drive class. I have had the same PLC590 table and PA 1000 carbon fiber arm in my system since 1980 and mine are still going strong. The only complaint I have is that the arms two set screws for the post make it nearly impossible to change VTA on the fly.
Both Flieb and Bdp24 above are giving advice that I would strongly agree with. If I were going to try an new MM type cart right now, I would give the Soundsmith Carmen very serious consideration. I heard its predecessor at an audio demo in Atlanta by Soundsmith a few years ago and was gob smacked at the level of clarity and detail. I have run a number of carts on my arm and table over the years, started with the Micro Acoustics 2002e, a Dynavector Ruby with step up amp, then the AT OC9, and recently the AT 150MLX mounted into a vintage Supex head shell. However, currently my best, most detailed sound is coming from an Ortofon OM10 cartridge body with a stylus and cantilever rebuilt with a line contact stylus by EXPERT STYLUS in the UK; that cart is mounted in a vintage Adcom "Skeleton" style head shell with Litz wire leads. My phono pre is a MS Phonomena II feeding into an Anthem D1 pre/pro, feeding a Cary Cinema 5 amp that's feeding a pair of Salk Sound V3 loudspeakers.
I also, have a JVC QL50 with Premier MMT arm in my upstairs system that is running an Ortofon 2m Bronze in a Jelco headshell that I really like. I have not yet tried it in my PLC590/PA 1000 setup, because I am so satisfied with the OM10 body with upgraded stylus retip.
Both Flieb and Bdp24 above are giving advice that I would strongly agree with. If I were going to try an new MM type cart right now, I would give the Soundsmith Carmen very serious consideration. I heard its predecessor at an audio demo in Atlanta by Soundsmith a few years ago and was gob smacked at the level of clarity and detail. I have run a number of carts on my arm and table over the years, started with the Micro Acoustics 2002e, a Dynavector Ruby with step up amp, then the AT OC9, and recently the AT 150MLX mounted into a vintage Supex head shell. However, currently my best, most detailed sound is coming from an Ortofon OM10 cartridge body with a stylus and cantilever rebuilt with a line contact stylus by EXPERT STYLUS in the UK; that cart is mounted in a vintage Adcom "Skeleton" style head shell with Litz wire leads. My phono pre is a MS Phonomena II feeding into an Anthem D1 pre/pro, feeding a Cary Cinema 5 amp that's feeding a pair of Salk Sound V3 loudspeakers.
I also, have a JVC QL50 with Premier MMT arm in my upstairs system that is running an Ortofon 2m Bronze in a Jelco headshell that I really like. I have not yet tried it in my PLC590/PA 1000 setup, because I am so satisfied with the OM10 body with upgraded stylus retip.