The Aurender N200 for instance can be both server and streamer. You can pop in up to two 8TB solid state memory chips. Most importantly is the sound quality. Aurender makes primarily streamers and there flagship is typically the most ubiquitous at audio shows. I currently own an N100 and W20SE... top and bottom of their line up. Their Conductor App for control is very highly regarded and if you want you can use Roon. Great service as well, built to last.
If your other equipment is of appropriate quality then N20 would be recommended. They just released their new flagship, the N50 which is a three box solution to improve sound quality even more by isolating functions.
On my systems the sound quality of streaming from Qobuz equals or exceeds stored files, so I only use stored files if for some reason my internet is down... like every couple years.