The best no-compromise digital options?

I completely agree with Tvad.

System "synergy" is the key to a good system. I have listened to some of the players you listed, and I would choose a good Linn, Naim or 47 Labs player over them.

The Zanden is very nice, if you have the system to let it's "character" shine.

The dCS and Esoteric are very detailed. Some (like me) would say "analytical".

I would recommend you look at a computer based system as well. A Apple Mac with a nice DAC (like the Wavelength) will give most "upscale" players a run for the money. Make sure to get a SSD drive. They make a difference.

Look what I did! I used words to describe sound. Help! ;)

The best I have heard is dcs Puccini and Weiss Medea.

I am in complete agreement with Tvad and Timbrepitch. I own the Zanden and the dCS but find that I almost exclusively listen to my computer based system (Toshiba, Spoiler, Pacecar), simply because that comes still closer than the Zanden Combo (the dCS Stack is indeed "analytical") to what I perceive as the "real thing".

Perhaps this is a philosophical question. It depends on how one approaches the concept of digital.

For me, one should start with the most accurate and faithful reproduction of the data. If you wish to modulate the overall sound, this should be done via the preamp, cables, and amp. If you do not have accurate reproduction at the beginning of the chain, there is nothing you could do to fix this further down the chain.

Wadia, DCS, and Esoteric are arguably the most over-engineered approaches to digital. That is, they have sought the optimal solution when it comes to power supply, transport stability and accuracy, processing ability, and data transfer methods. A single Wadia mono DAC weighs 40 lbs, has 2 transformers, 6 filtered power supplies, and 8 processing chips. One only needs to look at a picture of the Esoteric P01 transport to understand a glimpse of the R&D that went into it. These manufacturers are dedicated to digital, including overcoming significant obstacles from an engineering perspective. These machines also all need time, care, and system matching to set-up properly.

Interesting thread. I have a dcs Puccini coming in next week for audition, be anxious to hear what it brings to the table. I also plan on running my modified Squeezebox Duet through the digital in.