I had a chance to try a DAC3VB in my system a while back and I also thought it sounded fantastic. Since you like the sound of the DAC in your integrated so much maybe it's worth saving up for a bit for something like a used DAC3 (although I guess you'd also need a USB/SPDIF converter too if you don't have one)? That's what I'm doing anyway.
Short of that maybe something like a Metrum Octave or a Wavelength Proton? Best of luck.
Short of that maybe something like a Metrum Octave or a Wavelength Proton? Best of luck.