I searched in vain too. My dealer also had similar feedback to Johnnantais, most carts should be ok.
Eventually just went with a Ortofon Kontrapunt A. Coz in my desired price range, was the cart installed when I demo'd, recd decent reviews, recommended by my dealer who will offered to install/setup, Roksan cust svc responded Ortofons good cartridge and they have not recd any negative feedback on the Ortofons(but of course recommended their cartridges too!), saw another Radius V for sale with the Kontrapunct A.
I looked at the Roksan cartridges and Shelters(since I live in Japan can get slightly cheaper, but not much), lower output. Since I have to get an MC phono stage too, was hoping to get a cart with moderate output to open my options.
The bigger trick now appears to be the mounting. *Will probably rely on my dealer. The Radius V tone arm cable is very fragile. I broke one of the interconnects unpacking. Back for repair, hours after I purchased. I should have been more careful, but still broke very easy. It is a thin flat cable that is not flexible and somewhat brittle IMHO. Minor attribute which normally should not matter, if you are not careless.