Ah, those rose-tinted memories of hallucinogenic music; vague memories but it was a bit hazy at the time !
I've had two Decca arms; the first, I think, must have been the FFSS but the later one was an International (which my bro.-in-law still has). It was in this that my Decca (C4E, London?????) was mounted, and the memory of its visceral sound remains from 1974/5. I, like others, hanker after trying the Decca cart. thing again, in the context of a much better system than yesteryear.
As Tony says, the C4E (= SC4E ?) does have a rep., but maybe others, more modern ones, come close? John Wright, mentioned above, is the acknowledged expert refurbisher of Deccas; he must be getting on now, though.