If you’re looking for a wide/deep soundstage, then I do think you’ll be rewarded by investing in a streamer at least comparable to your DAC - and perhaps a better one. Again - my experience only but more spatial information is what a better source brought my DACs. All DACs are at least partially limited/constrained by their source - even the most expensive ones.
Lots of good suggestions here as to what equipment to try so I won’t add to the list. But, I will reiterate that an audition is a must and be sure you audition with cables (analog interconnects from your DAC to preamp and digital cables from your source to DAC) in your budget as they can make a significant difference too. I wouldn’t have believed digital cables were that important if I hadn’t heard it directly. Some digital connections (i.e. spdif vs USB) are more sensitive to this than others.
The general consensus is that Qobuz sounds better than Tidal. That certainly is my experience and a free trial will give you direct experience. With respect to catalogs, there is a huge amount of overlap in the titles they offer though my impression is that Tidal might be a bit deeper in pop and R&B. I personally listen more to classical, jazz, folk and indie so I may be incorrect as to catalog depth today.
Lastly, I would suggest that Roon is excellent (unequaled) for exploring new music and artists. But, for many of us, it doesn’t sound as good as the music library software native to many of the streamers you’ll be looking at. Some disagree with this, but I’m not sure if those skeptics have actually done the comparisons that many of us have. And I’m sure it’s at least somewhat equipment dependent. On my gear, Roon operated beautifully, but sounded flat in comparison. Since the native library management was still quite good, I was comfortable dropping my subscription to Roon.
We look forward to updates as you go.
Best,