Koetsu Stone Body vs Urushi/RSP


I am looking for a new cartridge. Several years back I owned a Koetsu RSP which I really liked. I favor a very smooth midrange sound due to a hearing hyoperacusis issue that makes sibilance range frequencies unpleasant.

In the current Koetsu line, would the non-stone body carts necessarily be smoother then the stone bodies? Any other cartridges out there that offer this sonic signature?

I have a 12" Reed 2A Cocobolo arm, SP-12 table/Dobbins plinth, Coincident phono stage and WE91A clone 300b amp, Audio Kinesis Zephrin speakers.
jarrett
You could also try a Shelter. They are smooth like the Koetsus. Also for medum/heavy tonearms.I love my 501 mk III and the more expensive models should be really outstanding.
I use the RSP with diamond cantilever. Exquisite. Smooth. Detailed. Quiet. Exquisite.

Used with an air bearing tonearm, and a highly modified and upgraded NA Mentor. Electronics are home-brew and ESL's are also modified.