I've also found that I much prefer my tube buffered DAC with several different "holy grail" 6DJ8 family tubes to any SS dac's I've heard. There is a level of realism, atmosphere and sonic layering that CCa tubes somehow manage to flesh out that just isn't existing with the SS dac's I've heard. I do believe that R2R's could reduce digital glare, without introducing the "dirtyness" of tubes. Waiting to hear for myself, and enjoying CCa's and pinched waist tubes for now.
I read generalizations that are made about SS and tube gear all the time, and on balance, those generalizations are generally reasonably accurate. But they are not absolutes. I say this as a someone who has excellent tube gear for his amplification chain, but also quite a bit of experience with some very well designed SS gear. Let me expand on that a bit: Tim de Paravincini, one of the best designers in the audio industry, says that he can can design an amplification component, either way, SS or tube, and they will sound
identical. This is because he understands the functions that are required to design and build a very good sounding piece of gear, and he is sophisticated enough to know that there is ALWAYS more than one way to achieve a function. An example, Tim makes a some very good phono stages, both tube and SS. I own his EAR 324, an SS design and can personally attest that if I did not tell you that it was not a tube phono pre, there would be no way for you to know. It has all of the wonderful tube qualities you mention above, that my Conrad-Johnson gear has, and yet is solid state. Same was true for the SS amp I bought from Wino, the amazing Conrad-Johnson Premier 350. Conversely, the best tube gear these days has many of the qualities associated with SS: transparency, low noise, resolution, detail and bass performance.
If you get a chance some time, go to an audio show and listen to TAD, Technical Brain, Burmester, MBL, or DarTZeel for an extended while. All of these brands have all of the wonderful qualities you associate with tubes, and more.