In my opinion all these are the best for doing Redbook pcm and the last, and in my view the best of the R2R Mutibit dacs, before they were stopped because of high cost of manufacture EG: laser trimming resistors ect. Now they’er making a big comeback as discrete R2R Multibit.
Mark Levinson No39 cdp hdcd but can be used as dac.
Naim CD555/P555 hdcd most stunning Redbook pcm player I’ve heard maybe also be used as a dac.
Linn CD12 hdcd player very close to the Naim.
Cary 303/200 hdcd for the budget minded.
Cheers George