as you own a Vega G2, I’m going to suggest you consider trying Auralic’s Aries G2.1 streamer. I have a different view than Carlsbad - The streamer or source is at least as important as the DAC in my experience. I know of several who post regularly on these forums who feel the same.
The Auralic Aries pairs particularly well (as a design goal) with the Vega if you connect them via Auralic’s lighting link (LL) which allows the units to speak to each other and share processing resources. LL is a significantly better digital connection than the other options on your Vega. I tried them all. And, LL is a particularly significant improvement if you upgrade from the supplied stock LL cable.
I’d put it this way:
Vega G2 as a DAC = quite good
Aries G2.1 as a streamer = quite good
Vega + Aries connected via LL = very good
I directly compared my front end to multiple other options, including two of which are about $35k (either of which I was prepared to purchase). We’re those options better? Perhaps, but the differences were less than I was expecting and not nearly enough to justify the additional expense.
I will also suggest that you are throttling your Vega if you’re using it as a Roon endpoint. It is very easy to hear the improvement when streaming using Auralic’s Lightning DS controller. Just try playing your favorite file over your Vega using Roon. Then play the same file via LDS. For me, it was quite a difference.It may be that they’ve addressed this with a software update since I did my comparison, but it’s pretty common held view that Roon - which has to work across so many devices - may not be the best for sound quality.
Further, since you’re interested in sound quality, try Qobuz vs Tidal which I found to be the better of the two. Lastly, I will note that I recently purchased the Auralic Sirius outboard processor (again connected via LL so that they communicate and share resources.) Since you already own some Auralic gear, consider that they have provided an upgrade path which is compelling where the sum appears to be greater than the parts.
Of course, YMMV, but hope this helps as you consider your next options.
Best,