FWIW, I find that the Urushi works very well with a moderate, rather than light tonearm (i.e. 10 g +). I use an SME V and am pleased with the results. I have heard that the cartridge works even better with higher mass arms, but I haven't got around to sticking some blutack on my arm and rebalancing to see.
I should think than an FR-64S or FR-66S would be a good match.
I should think than an FR-64S or FR-66S would be a good match.