I'd have to think the DAC design (DS or R2R) may not be the dominate factor in achieving what you describe. Big factor though, certainly. I would think the room, the speakers and the recording itself would be more prevalent.
Sound quality in an audio system is of course a "system" thing involving every single part. I feel that both the source and the speakers are the dominating factors. In the case of my two different DAC technologies, I compared them head-to-head in the same system at the same time. The D/S won hands-down.
Steve N.
Empirical Audio