Who listens primarily to Redbook CD?

I would second the tubed Concert Fidelity DAC that @ps68 above referred to.  It has a Philips DAC chip. Very fine sound I get from it, frankly eclipsing what I can get from LPs at any (to me) affordable price point in practically every way.  My CF DAC is fed only 16/44 redbook digital signals by a MacMini via Berkeley USB.  I have goosed the performance of my CF DAC with Shakti Onlines and Synergistic ECTs inside and by damping the PCB screws with Herbie's washers. I use a very good balanced power source (BPT) for all components.  Stillpoints ERS paper all over the inside walls of my Berkeley USB, another 10 SR ECTs inside and Herbie's washers damping the PCB screws. BTW I have very little ERS paper inside the DAC, and that only on the transformer.  I can say honestly the results make me very happy. 

The Schiit is an R2R but not discrete so IMO still is a chip type of processor.  You can buy discrete R2R for under $300.  I have also build a DAC with the sigma and I found it so sound excellent also.  The discrete R2R was more analog sounding to my ears, but I also liked what the Sigma offered.  Its a matter of ones own taste.

Happy Listening.

Red Book most of the time, either hard drive or dedicated disc player.  I have a few DVD-A's and maybe 25 SACD most being dual format, SACD/Red book. I also do vinyl.  I have a fairly large collection of music and really don't need to rent more.

I bought an Esoteric K-01X a year ago and since then I have rediscovered all my Red Book CD's.  Esoteric is one of those companies that believes you can get the best sound from spinning silver discs, as opposed to streaming or file storage.  They made me a believer.  It also does a phenomal job on SACD's.  But the level of improvement on CD's is more dramatic.  The K-01X unfolds and delivers 16 bit media with the same depth, density and delicacy as a high-end MC cartridge.  An absolute blast!!!

alexatpos' response in favor of RBCD:
"There is also a matter of owning (holding it) the actual product.."

Thanks for this comment as I wholeheartedly agree!