I am running a Koetsu Urushi Gold in an FR-64fx. Works great. I was told by a long lost friend at Sumiko that Koetsu's were originally designed by Sugano for FR tonearms.
I also have a Sumiko MDC-800 and it does not work as well with the Koetsu as with the FR. The MDC-800, with a 3g headshell weight, works very well with my Miyajima Shilabe. Both are low compliance cartridges - so go figure.
As my friend Raul often points out - putting a cartridge and a tonearm together is like a marriage - it can go great, or it can cause you to tear your hair out, and the only way to find out how it's going to go is to try it. Spec.s only tell you so much.
I also have a Sumiko MDC-800 and it does not work as well with the Koetsu as with the FR. The MDC-800, with a 3g headshell weight, works very well with my Miyajima Shilabe. Both are low compliance cartridges - so go figure.
As my friend Raul often points out - putting a cartridge and a tonearm together is like a marriage - it can go great, or it can cause you to tear your hair out, and the only way to find out how it's going to go is to try it. Spec.s only tell you so much.