Since you mentioned you prefer R2R DAC’s maybe look into the Dutch made Metrum and Sonnet DAC’s.
Depending on the model the price point for new or used would be within your budget.
Holographic DAC With Air And Decay
Like the title says what’s your vote for favorite Dac when it comes air, decay and three dimensional soundstage? Looking at 3k or less used. I tend to prefer R2R and, or tubes. I suppose I'm open to other options as long as it sounds smooth and refined. As always I look forward to all your input, thanks!