Top CDPs, computer audio, fine, but a quality vinyl set-up is still the music transcription acme. Browsing in W.H. Smith this morning and reading about the new analogue stuff (Ortofon, e.g.) coming out, this highly contentious comparison will no doubt continue.
No-one's mentioned the Naim CDP 555, which, regardless of value, is among the top players still.
O.P., it's a challenging task to try to move on from a recognisably accomplished player like the Opus, and I venture to suggest that any other s/s CDP might be a little different in presentation, but effectively not a leap forward. A valved CDP, however, is just so different and involving that the change would be justified on those grounds alone. Hang on to your Opus after buying its replacement, chop and change as I've done with amplifiers, speakers and CDPs and when convinced, sell the other, having lost little or no residual value in the interim.
Took me 6 months to relinquish my Na 135s for valved E.A.R. mono's and similarly to my transition to large ESLs from my ProAc Response Four behemoths.